20 Tough GMAT SC Questions

7/24/2019 20 Tough GMAT SC Questions

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20 TOUGH SC

QUESTIONS

EXPLAINED

20 TOUGH S

QUESTION

SENTENCE CORRECTION QUESTION

PACK

20 Tough Questions To Test Your GMAT SC Ski l ls
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TABLE OF CONTENTS

CHAPTER 1: GMAT SC Tough Quest ions .............? ? ......? ? ? ? ..? .......................

CHAPTER 2 : Solutions ...? .? ? ? ? ? ? ? ? ? ? ....? ...............................? ? ? ? ..17


6/27

1.When drive-ins were at the height of their popularit y in the late 1950?s, some 4,000 existe

in the United States, but today there are less than one-quarter that many.

A.there are less than one-quarter that many

B.there are fewer than one-quarter as many

C.

there are fewer than one-quarter of that amount

D.

the number is less than one-quarter the amount

E.it is less than one-quarter of t hat amount

Quest ion No. 2:

2.

Socially and environmentally responsible investing is on the rise: last year in the Unite

States, over $2 trillion was invested in funds that screen companies according to a variety o

criteria such as adherence to labour standards, protection of the environment, and observanc

of human rights.

A. according to a variety of criteria such as

B. according to a variety of such criteria, as by

C. according to such a variety of criteria as by

D. in accordance with such a variety of criteria as

E. in accordance with a variety of criteria, such as by

Quest ion No. 1:

# 1 GMAT SENTENCE CORRECTION QUESTIONS


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3.The discovery that Earth?s inner core rotates independent ly of and more quickly than Earth

outer layers is responsible for advancing studies of the flow of heat from the inner through th

outer pl anet and of the formation and periodic reversal in di rection of Earth?s magnetic f ield

A.

core rotates independently of and more quickly than Earth?s outer layers is responsible fo

advancing studies of the flow of heat from the inner through the outer planet and of th

formation and periodic reversal in direction of Earth?s magnetic f iel

B.core rotates independently of and more quickly than Earth?s outer layers is responsible fo

advancing studies of how heat from the inner core flows through the outer planet, and th


C.

core rotates independent ly and more quickly than Earth?s outer layers a

responsible for advancing studies of how heat from the inner core flows through the oute

planet, and how Earth?s magnetic f ield forms and the periodic reversal of it s directio

D.core, rotating independently and more quickly than Earth?s outer layers, are responsible fo

advancing studies of the flow of heat from the inner through the outer planet, and th


E.

core, rotating independent ly of and more quickly than Earth?s outer layers, is responsible fo

advancing

Quest ion No. 4:

4.

The application of a new method for analysing the chemistry of tooth enamel all ows

scientists to examine molars of pre-human ancestors and determining that their diets were

more varied than had been supposed.

A.

The application of a new method for analysing the chemistry of tooth enamel allow

scient ists to examine molars of pre-human ancestors and determining

B.

Through the application of a new method for analysing the chemistry of tooth enamel, th

molars of pre-human ancestors were examined by scient ists who determined

C.When they applied a new method for analysing the chemistry of tooth enamel, scientis

examined molars of pre-human ancestors, determining

D. Applying a new method for analysing the chemistry of tooth enamel, the molars o

pre-human ancestors have been examined by scientists, who determined

E.

Applying a new method for analysing the chemistry of tooth enamel, scientists hav

examined molars of pre-human ancestors and determined

Quest ion No. 3:


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5.

The bones of Majungatholus atopus, a meat-eating dinosaur that is a distant relative of

Tyrannosaurus rex and closely resembles South American predatory dinosaurs, have been

discovered in Madagascar.

A.

The bones of Majungatholus atopus, a meat-eating dinosaur that is a distant relative

Tyrannosaurus rex and closely resembles South American predatory dinosaurs, have bee

discovered in Madagascar.

B. The bones of a meat-eating dinosaur, Majungatholus atopus, a distant relative

Tyrannosaurus rex and with a close resemblance to South American predatory dinosaurs, ha

been discovered in Madagascar.

C.In Madagascar, the bones of a meat-eating dinosaur, Majungatholus atopus, distantly relate

to Tyrannosaurus rex and closely resembled South American predatory dinosaurs, have bee

discovered.

D. A distant relative of Tyrannosaurus rex, bearing a close resemblance to South America

predatory dinosaurs is Majungatholus atopus, a meat-eating dinosaur, the bones of which hav

been discovered in Madagascar.

E.

A distant relative of Tyrannosaurus rex and closely resembling South American predator

dinosaurs, the bones of a meat-eating dinosaur, Majungatholus atopus, have been discovered i

Madagascar.

Quest ion No. 5:


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Quest ion No. 6:

6. The prol if eration of so-called cybersquatters, people who register t he Internet domain name

of high-profile companies in hopes of reselling the rights to those names for a profit, led t

passing the Anti-Cybersquatting Consumer Protection Act in 1999, allowing companies to see

up to $100000 in damages against those who register domain names with the sole intent o

sell ing them later.

A. passing the Anti-Cybersquatting Consumer Protection Act in 1999, allowing companies

seed up to $100000 in damages against t hose who register domain names with the sole inten

of selli ng them later.

B.

the passage of the Anti-Cybersquatting Consumer Protection Act in 1999, which allow

companies to seed up to $100000 in damages against those who register domain names wit

the sole intent that they will sell.

C.

the passage in 1999 of the Anti-Cybersquatting Consumer Protection Act, which allow

companies to seed up to $100000 in damages against those who register domain names wit

the sole intent of selling

D.the Anti-Cybersquatting Consumer Protection Act, which was passed in 1999, and it allow

companies to seek up to $100000 in damages against those who register domain names wi

the sole intent to sell

E.the Anti-Cybersquatt ing Consumer Protection Act, passed in 1999, and it allows companies

seek up to $100000 in damages against those who register domain names with the sole inten

of selling


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Quest ion No. 7:

7.Five hundred mil li on dif ferent species of li ving creatures have appeared on Earth, nearly 9

percent of them vanishing.

A.

Five hundred mil lion di f ferent species of li ving creatures have appeared on Earth, nearly 9

percent of them vanishing.

B. Nearly 99 percent of f ive hundred mil lion dif ferent species of l iving creatures that appeare

on Earth have vanished.

C. Vanished are nearly 99 percent of the five hundred million different species of livin

creatures that appeared on Earth.

D.

Of five hundred million different species of living creatures that have appeared on Eart

nearly 99 percent of them have vanished.

E.

Of the five hundred mil lion dif ferent species of l iving creatures that have appeared on Eart

nearly 99 percent have vanished.

8.

Yellow jackets number among the 900 or so species of the world?s social wasps, wasps living

in a highly cooperative and organized society where they consist almost entirely of

females? the queen and her steri le female workers.

A.

wasps living in a highly cooperative and organized society where they consist almost entire

of

B.wasps that l ive in a highly cooperative and organized society consisting almost ent irely of

C.

which means they l ive in a highly cooperative and organized society, almost all

D. which means that their society is highly cooperative, organized, and it is almost entirely

E.l iving in a society t hat is highly cooperative, organized, and it consists of almost all

Quest ion No. 8:


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Quest ion No. 9:

9.The results of two recent unrelated studies support the idea that dolphins may share certain

cognit ive abil it ies wit h humans and great apes; the studies indicate dolphins as capable of

recognizing themselves in mirrors? an abilit y that is often considered a sign of

self -awareness? and to grasp spontaneously the mood or intention of humans.

A.

dolphins as capable of recognizing themselves in mirrors? an abil it y that is often considere

a sign of self -awareness? and to grasp spontaneously

B.

dolphins?abil it y to recognize themselves in mirrors? an abil it y that is often considered as

sign of self -awareness? and of spontaneously grasping

C. dolphins to be capable of recognizing themselves in mirrors? an abil ity that is ofte

considered a sign of self -awareness? and to grasp spontaneously

D.that dolphins have the abil ity of recognizing themselves in mirrors? an abil ity that is ofte

considered as a sign of self -awareness? and spontaneously grasping

E.

that dolphins are capable of recognizing themselves in mirrors? an abil ity that is ofte

considered a sign of self -awareness? and of spontaneously grasping

10. By recording the noise of crinkled wrappers as they were slowly stretched out in a

otherwise silent chamber, and then digitizing and analyzing the sound emissions on computer

a team of scientists found the noise not continuous but consisted of individual bursts or pop

just thousandths of a second long.

A.

digitizing and analyzing the sound emissions on computers, a team of scientists found th

noise not

B.

digitizing and analyzing the sound emissions on computers, a team of scientists found th

the noise was not

C.digitizing and analyzing the sound emissions on computers, a team of scientists found th

noise not to be

D.the sound emissions were digitized and analyzed on computers, a team of scientists foun

that the noise was not

E.

the sound emissions were digitized and analyzed on computers, a team of scientists foun

the noise not to be

Quest ion No. 10:


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Quest ion No. 11:

11.Because of wireless service costs plummeting in the last year, and as mobile phones ar

increasingly common, many people now using their mobile phones to make calls across a wid

region at night and on weekends, when numerous wireless companies provide unlimite

airt ime for a relatively small monthly fee.

A.

Because of wireless service costs plummeting in the last year, and as mobile phones ar

increasingly common, many people

B.

As the cost of wireless service plummeted in the last year and as mobile phones becam

increasingly common, many people

C. In the last year, with the cost of wireless service plummeting, and mobile phones hav

become increasingly common, there are many people

D.With the cost of wireless service plummeting in the last year and mobile phones becomin

increasingly common, many people are

E.

While the cost of wireless service has plummeted in the last year and mobile phones a

increasingly common, many people are

12.

Sound can t ravel through water for enormous distances, prevented f rom dissipating it s

acoustic energy as a result of boundaries in the ocean created by water layers of di f ferent

temperatures and densit ies.

A.

prevented from dissipating its acousti c energy as a result of

B.prevented f rom having it s acoustic energy dissipated by

C.it s acousti c energy prevented from dissipating by

D.

i ts acoustic energy prevented f rom being dissipated as a result of

E.

preventing its acousti c energy from dissipating by

Quest ion No. 12:


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Quest ion No. 13:

13.A New York Cit y ordinance of 1897 regulated the use of bicycles, mandated a maximum

speed of eight miles an hour, required of cyclists to keep feet on pedals and hands on

handlebars at all t imes, and i t granted pedestrians right-of -way.

A.regulated the use of bicycles, mandated a maximum speed of eight mi les an hour, required o

cyclists to keep feet on pedals and hands on handlebars at all t imes, and it granted

B.regulated the use of bicycles, mandated a maximum speed of eight miles an hour, require

cyclists to keep feet on pedals and hands on handlebars at all t imes, granting

C.

regulating the use of bicycles mandated a maximum speed of eight miles an hour, require

cyclists that they keep feet on pedals and hands on handlebars at al l t imes, and it granted

D.

regulating the use of bicycles, mandating a maximum speed of eight miles an hour, requirin

of cyclists that they keep feet on pedals and hands on handlebars at all t imes, and granted

E.

regulating the use of bicycles mandated a maximum speed of eight miles an hour, require

cyclists to keep feet on pedals and hands on handlebars at all t imes, and granted

14.Scholars who once thought Native American li teratures were solely oral narratives recorde

by missionaries or anthropologists now understand this body of work to consist of both ora

li teratures and the wri tten works of Native American authors, who have been publ ishing sinc

1772.

A.

Scholars who once thought Native American li teratures were solely oral narratives

B.

Scholars thinking of Native American l it eratures once solely as oral narratives, and

C.Scholars who once had thought of Native American literatures solely as oral narratives and

D.

Native American li teratures, which some scholars once thought were solely oral narratives

E.

Native American literatures, which some scholars once, thinking they were solely ora

Narratives

Quest ion No. 14:


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Quest ion No. 15:

15.

Books in European libraries last longer than books in l ibraries in t he United States becaus

alt hough the climate in Europe is fairly humid, libraries there are not subjected to the extreme

of temperature and humidi ty that damage collections in t he United States.

A.

because, alt hough the climate in Europe is fairl y humid, libraries there are not subjected t

the extremes of t emperature and humidit y that

B.

because, alt hough the climate in Europe is fairl y humid, libraries there are not subject of th

extremes of temperature and humidi ty as those that

C.because, alt hough the climate in Europe is fairl y humid, libraries there are not subjected t

the extremit ies of temperature and humidity as

D.because the climate in Europe is fairly humid, but still libraries there are not subject of th

extremes of temperature and humidi ty as

E.

because the climate in Europe is fairly humid, but libraries there are not subjected to th

extremit ies of t emperature and humidi ty such as those that

16.

Unlike the body?s inf lammatory response to cuts and sprains, wi th widespread swel ling an

stiffness immobilizing the injured area until it heals, the body?s response to sunburn is mor

localized and result ing in a distinct l ine dividing affected and unaffected areas of the skin.

A.

with widespread swelling and stiffness immobilizing the injured area until it heals, th

body?s response to sunburn is more localized and result ing

B.

where the injured area is immobilized with widespread swelling and stiffness until it ha

healed, sunburn generates a more localized response in the body, which results instead

C. with the injured area immobilized by means of widespread swelling and stiffness un

healing, sunburn generates a more localized response in the body, one resulting

D.in which widespread swelling and stiffness immobilize the injured area until it has heale

the body?s more localized response to sunburn results

E.

in which widespread swelling and stif fness immobil ize the injured area unti l healing, instea


Quest ion No. 16:


15/27

Quest ion No. 17:

17.

The KwakiutI recognized one social unit larger than the tribe? the confederacy, which was

cluster of loosely knit, informally related neighboring tribes who interacted with themselve

more often than between other t ribes.

A.

tribes who interacted with themselves more often than between

B.t ribes who interacted among each other more of ten than among

C.

t ribes who interacted with one another more often than with

D.

t ribes, interacting among each other more of ten than between

E.tribes, interacting among one another more often than with

16.

Unlike the body?s inf lammatory response to cuts and sprains, wi th widespread swel ling an

stiffness immobilizing the injured area until it heals, the body?s response to sunburn is mor

localized and result ing in a distinct l ine dividing affected and unaffected areas of the skin.

A.

with widespread swelling and stiffness immobilizing the injured area until it heals, th

body?s response to sunburn is more localized and result ing

B.

where the injured area is immobilized with widespread swelling and stiffness until it ha

healed, sunburn generates a more localized response in the body, which results instead

C. with the injured area immobilized by means of widespread swelling and stiffness un

healing, sunburn generates a more localized response in the body, one resulting

D.in which widespread swelling and stiffness immobilize the injured area until it has heale


E.

in which widespread swelling and stif fness immobil ize the injured area unti l healing, instea


Quest ion No. 18:


16/27

Quest ion No. 19:

19. There are no legal l imi ts, as there are for cod and haddock, on the size of monkf ish that can

be caught, a circumstance that contributes to their depletion through overfishing.

A.There are no legal limits, as there are for cod and haddock, on the size of monkfish that can

be caught, a circumstance that contributes to their depletion through overfishing.

B.

There are no legal limit s on the size of monkf ish that can be caught, unlike cod or haddock, a

circumstance that contributes to deplet ing them because they are being overfished.

C.There are legal l imits on the size of cod and haddock that can be caught, but not for monkf is

which contributes to its depletion through overfishing.

D.Unlike cod and haddock, there are no legal size limits on catching monkf ish, which

contributes to its deplet ion by being overf ished.

E.

Unlike catching cod and haddock, there are no legal size limit s on catching monkf ish,

contributing to their deplet ion because they are overfished.

20.

According to a survey of graduating medical students conducted by the Association o

American Medical Colleges, minority graduates are nearly four times more likely than are othe

graduates in planning to practice in socioeconomically deprived areas.

A. minorit y graduates are nearly four t imes more likely t han are other graduates in planning t

practice

B. minority graduates are nearly four times more likely than other graduates who plan o

practicing

C.minorit y graduates are nearly f our t imes as likely as other graduates to plan on practicing

D.

it is nearly four times more likely that minority graduates rather than other graduates w

plan to practice

E.it is nearly four t imes as li kely for minori ty graduates than other graduates to plan to Practic

Quest ion No. 20:


17/27

There is a clear spl it in t he options of this question - the spl it is between ?fewer? and ?less?. Th

former is used for countable quantit ies and the latter is used for uncountable quanti t ies. Sinc

we are talking about the number of drive-ins, ?fewer? is appropriate here.

A ? Uses ?Less? ? Eliminate.

B ? OA

C ? Uses ?Fewer? but uses ?amount? ? Eliminate.

D ? Uses ?Less?? Eliminate.

E ? Uses ?Less? and also uses ambiguous ?it? ? Eliminate.

Why is this quest ion t ough?

This question uses various combinations of words that are used for countable and uncountabl

quanti t ies and hence can be a li ttl e confusing to deal with.

Quest ion No. 1:

# 2 SOLUTIONS

Quest ion No. 2:

One thing to note here is the usage of the 'colon'. This means that the part after colon

describing the fact that some kind of investment is on the rise. Further the sentence goes ont

say that over $2 trillion was invested in funds that screen companies according to a variety o

criteria. Finally the sentence provides examples of the criteria.

A ? OA

B ??such cri teria as by? is incorrect usage. The preferred form would be ?? criteria, such as..?

C ? Same as B

D ? The phrase ?such a variety? distorts the meaning of the sentence - it indicates that th

examples mentioned are examples of the variety. This is not the case.

E ? Same as B.

Why is this quest ion tough?

The usage of colon is not a concept that is widely tested on the GMAT. Also, it could be di f f icu

to identif y the incorrect usage of 'as by' .


18/27

You can start solving this question by comparing the answer choices. Options A, B and C hav

the phrase ?? core, rotates?? whereas Options D and E have the phrase ?? core, rotating?

Remember that a part icipial modif ier wi ll modif y the entire preceding clause and applies to th

subject of the previous clause. In Options D and E, the participial phrase does not modify th

preceding clause, nor does it apply to the subject of the previous clause.

A ? OA

B ? This opt ion is not parallel.

C ? This is incorrect due to the usage of the verb in the phrase ?? are responsible..?. The righ

form has to be ?? is responsible? ?

D ? Improper usage of the part icipial modif ier.

E ? Improper usage of the part icipial modif ier


This question can be solved easily if vert ical comparison is used. However due to overwhelmin

text and time pressure, one may not think of doing vert ical comparison.

Quest ion No. 3:

Quest ion No. 4:

There are a lot of concepts that are in play here. However, the first concept that one woul

identif y here is parallel ism between ?? examine? and ? determining?. This is not parallel an

hence you can start eliminating options.

A ? Not parallel.

B ? Wrong modifier that says ?Through the application? ..?. This modif ies ?molars?.

C ? This changes the meaning of the sentence and introduces an unnecessary causality.

D ? Wrong modi f ier. The phrase ?Applying? .? Modif ies ?molars?.

E ? OA.


The concept tested is difficult to be identified here. Also. the reason why Option C i

eliminated is also very subtle.


19/27

There is nothing wrong in the given sentence. This means we hold on to Option A and move o

to f ind errors with the other options.

A ? OA

B ? Subject verb Agreement error ? The bones? .has been discovered.

C ? Distantl y related and closely resembled are not parallel.

D ? Inappropriate usage of modif iers. The part icipial modif ier ?bearing? ? modif ies the subje

of the previous clause, which is ?A distant relative?.

E ? Inappropriate usage of modif iers. The phrase ?A distant relative? ? modif ies the bones.


The fact that the entire sentence is underlined makes it somewhat overwhelming to proces

this sentence. However, that can act as an indicator to show that this is a modif ier question.

Quest ion No. 5:

Quest ion No. 6:

There are lot of problems wi th this sentence. Hence POE would be an effective way to solve.

A ? There are two problems with this sentence. The f irst problem is wi th the verb ?passing?. Th

action is already done and hence ?passing? would be a wrong tense to use. Also, the structur

should be ?The prolif eration? .led to? the passage..?

B ? There is a problem wi th the pronoun ?they?, which is ambiguous as it can refer to companie

or names.

C ? OA

D ? There are two problems with this option. There is a problem with the pronoun ?it?. Also, th

conjunction ?and? creates false parallelism.

E ? Same as D.


Option C, which is the OA doesn? sound right due to the phrase ?the passage in 1999?. Thi

makes everyone assume that Option C is wrong. However Option C is grammatically right and

the OA.


20/27

The concept tested in this sentence is tenses.

A ? This option uses the wrong tense. The action depicted by the word ?vanishing? is alread

done and hence the usage of the ?ing? form for the same is inappropriate.

B ? This opt ion changes the meaning of the sentence.

C ?. This opt ion changes the meaning of the sentence.

D - The usage of the pronoun ?them? makes the sentence redundant.

E ? OA


All the options for this question are very close. Also, all of the options SOUND right. That is th

reason why this sentence is dif f icult .

Quest ion No. 7:

Quest ion No. 8:

This question can also be solved using the spli t in the options.

A ? The pronoun ?where? refers to organised society ? This is wrong.'

B ? OA

C ? Inappropriate usage of t he modif ier ?which?, which incorrectly refers to wasps.

D ? Same as C.

E ? There is a v+ing modifier that tends to modify the entire preceding clause and applies t

Yellow Jackets.


This question tests the various rules of modif iers. Gett ing this answer right requires a thoroug

knowledge of t he various rules of modif iers.


21/27

The fi rst thing to know here is the idiom ?indicate that?. This eliminates the f irst three option

A ? Wrong idiom.

B ? Wrong idiom.

C ? Wrong idiom.

D ? Wrong idiom ? Uses ?considered as? while the right idiom is ?considered?.

E ? OA.


One needs to know the idioms to solve this question. If the idioms aren? known, then arriving a

the right answer to this question may be dif f icult.

Quest ion No. 9:

Quest ion No. 10:

The concept tested here is parallelism.

A ? ?A team found the noise? ? They didn? find the noise. They found something about th

noise.

B - OA

C ? Same as A.

D ? Not parallel.

E ? Not parallel.


One needs to identif y the concept t ested on this question in order to f ind out the right answe

Also the dif ference between Opt ions A,B and C is very subtle and is to do wi th meaning.


22/27

This question tests sentence construction.

A ? This sentence is incomplete.

B ? This sentence is incomplete.

C ? This sentence says ?? With X? there are many people? ? This changes the meaning of th

sentence.

D ? OA

E ? This sentence is not parallel. It says ?? . Cost? has plummeted ? and ? . Mobile phones ar

increasingly common?


This sentence might be a li tt le dif f icult to answer because identi fying the concept tested is no

very easy here. One needs to read through Options A and B to realise the concept of sentenc

fragments and must also understand the usage of tenses here.

Quest ion No. 11:

Quest ion No. 12:

If you read through this sentence you will realise that there is a clear split in the options. Ther

are three options that begin wi th ?prevented? and ?preventing? and there are two opt ions tha

begin with ?it s acoustic energy?.

However, when you read through the options, you will understand that Options A,B and

indicate that it is the sound that does the prevention here. However, it is the acoustic energ

that is doing the prevention. This eliminates Opt ions A, B and E. Opt ion D is incorrect because

inappropriately uses the word ?being?. ?Being? is generally used to talk about the current stat

of something. This leaves us with Opt ion C which is the OA.

A ? Incorrect meaning conveyed. This sentence seems to say that the sound ?prevented? from

dissipating.

B ? Same as A.

C ? OA

D ? Incorrect usage of the word ?being?

E ? Same as A.


This sentence might be a li tt le dif f icult to do because identi fying the concept is dif f icult . Henc

you might have to go to each and every option to f ind errors and eliminate.


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The concept tested in this sentence is parallelism. The structure of the sentence can be

simplif ied as given below.... A (regulated...), B (mandated..), C (requi red) to keep X (feet...) and

Y(hands..), D (granting..)

Hence, in the given sentence the i tems A, B, C and D must be parallel to one other.

A- regulated...

B- mandated...

C - required... X (feet..)and Y (hands...)

D ? and granted..

Also, the last i tem of the li st should have and preceding it . This leaves us with the right answe

choice Option E.

A ? Not parallel.

B - Not parallel.

C ? Not parallel.

D ? Not parallel.

E ? OA.


Identi fying the l ist here is the key to solving this sentence. The list i s dif f icult is find out.

Quest ion No. 13:

Quest ion No. 14:

The POE for t his question is as fol lows.

A ? OA

B ? This option is not parallel and makes it seem as though there are 2 actions happening.

C ? The usage of past perfect tense (had thought) is inappropriate because we use the past

perfect tense for an action that started in the past and ended in the past. Here the action

?thought? is more of an instantaneous action.

D ? This opt ion presents a sentence fragment. This opt ion is incomplete.

E ? This changes the meaning of the sentence. According to this sentence, Native American

Lit eratures are thinking, whi le it is the scholars who are supposed to do so.


The dif ferences between the answer opt ions are quite subtle. That makes this dif f icult .


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The solut ion to the question is as fol lows -

A ? OA

B ? The books are subject TO extreme condi tions. They aren? subject OF condi tions.

C ? Changes the meaning of the sentence as it ends with 'temperature and humidity as damag

collections in the US'.

D ? Same as B.

E ? Option E seems to merely state f acts by saying that European books last longer because th

climate there is humid but they are not subject to extreme climatic conditions. However, th

meaning that we want is ?Although they are not subject to extremities, the books last longer..?

Hence, this can be eliminated.


The differences between the options are quite subtle. Also, the reasons for elimination ar

more to do wi th the meaning.

Quest ion No. 15:

Quest ion No. 16:

The concept tested in this question is to do wi th tenses, pronouns and comparisons.

A ? The usage of the word ?With? makes it look simul taneous.

B ? Inappropriate usage of the word ?Where?

C ? Same as A.

D ? OA

E ? The phrase ?until healing? is inappropriate. ?Until ? is an indicator that one must use presen

perfect tense.


Multiple concepts are tested on this sentence. That makes elimination possible only if on

knows all the concepts.


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The concept t ested here is both pronouns and modif iers.

A ? Tribes did not interact with themselves.

B ? Each other is used only when there are two things that are talked about

C - OA

D ? The verb+ing modif ier starting with ?interacting? ? tends to modif y The Kwakiutl . It is

supposed to modif y the tribes.

E ? Same as D.


The dif ferentiation between Options A, B and C is quit e subtle. One needs to know the

dif ference between ?each other? and ?one another? to get this question right.

Quest ion No. 17:

Quest ion No. 18:

The fact of is idiomaticall y incorrect; we'd have to say The fact that to even have a shot of

correctness. Further, even the fact that is li kely to lead to modif ication and style problems.

Eliminate (A).

Scanning the beginning of the remaining choices, we also quickly dump (C) and (D). While you

can, in theory, start a sentence with with some , a quick peek after the comma in both choices

tells us the next part of the sentence begins with it highlights and it is a fact . It highlights

is almost certainly going to introduce a passive construction - bad style on the GMAT. Similarly,

it is a fact is passive and can be ruled out. Eliminate (C) and (D).

(B) looks good at a first glance, to let's move to (E). It's acceptable to begin a sentence with

because , but (E) has the same after-the-comma issue as (C) and (D) - Because X, this fact

highlights makes no sense. Eliminate (E).

Hence the POE would be as given below.

A ? Inappropriate usage of The fact of

B ? OA

C ? Passive construct ion.

D ? Passive construct ion

E ? Changes the meaning of the sentence.

Why is this quest ion dif f icul t?

Identif ying the concept tested on the sentence is dif f icult as there is no one clear concept

tested in this sentence. One has to go through all the 5 opt ions to f ind out all the 5 options to

f ind errors on the sentence.


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The concept tested on this question is comparison.

A ? OA

B ? This opt ion tends to compare monkfish to cod or haddock, whi le it is supposed to compare

the legal l imit s.

C ? Inappropriate usage of the modif ier ?Which? as it refers to monkf ish.

D ? Wrong comparison. Tends to compare cod, haddock wi th legal size limits.

E ? Wrong comparison. Tends to compare action with legal size.


This question is diff icult to solve because figuring out the things that are being compared in

each option is dif f icult.

Quest ion No. 19:

Quest ion No. 20:

In this question, there is a clear spli t between the opt ions. There are three options that begin

with the phrase ?minori ty graduates? and three options that begin with the pronoun ?it?.

Clearly t he latter can be eliminated due to the usage of the pronoun which does not have an

antecedent.

A ? The phrase ?in planning to practice? is awkward because the intention is to plan and not to

practice. Hence ?planning? must be in the inf ini t ive f orm.

B ? The relative pronoun ?who? in this opt ion refers to the other graduates. According to the

sentence it is supposed to be referring to t he minority graduates.

C ? OA

D ? Eliminated due to the inappropriate usage of ?it ?.

E ? Same as D.


The sentence is long and people tend to start solving this question based on comparison, whi le

it is easier t o solve this question using pronouns. Also, mult iple rules of pronouns are tested in

this sentence.


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20 Tough GMAT SC Questions

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