It is currently 12 Dec 2017, 21:19

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# New CR Question from OG 2016 (Garlic Fields)

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Verbal Forum Moderator
Joined: 15 Apr 2013
Posts: 196

Kudos [?]: 896 [8], given: 30

Location: India
Concentration: General Management, Marketing
GMAT Date: 11-23-2015
GPA: 3.6
WE: Science (Other)
New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

03 Jul 2015, 08:05
8
This post received
KUDOS
15
This post was
BOOKMARKED
00:00

Difficulty:

15% (low)

Question Stats:

77% (01:20) correct 23% (01:35) wrong based on 1315 sessions

### HideShow timer Statistics

One summer, floods covered low-lying garlic ﬁelds situated in a region with a large mosquito population. Since mosquitoes lay their eggs in standing water, ﬂooded ﬁelds would normally attract mosquitoes, yet no mosquitoes were found in the ﬁelds. Diallyl sulﬁde, a major component of garlic, is known to repel several species of insects, including mosquitoes, so it is likely that diallyl sulﬁde from the garlic repelled the mosquitoes.

Which of the following, if true, most strengthens the argument?

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic.

(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years.

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi.

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.

(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds.

Regards
Vikas

Please hit kudos if you like this post
[Reveal] Spoiler: OA

Kudos [?]: 896 [8], given: 30

Verbal Forum Moderator
Status: Getting strong now, I'm so strong now!!!
Affiliations: National Institute of Technology, Durgapur
Joined: 04 Jun 2013
Posts: 561

Kudos [?]: 719 [2], given: 80

Location: India
GPA: 3.32
WE: Information Technology (Computer Software)
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

03 Jul 2015, 09:26
2
This post received
KUDOS
Ahh this is the first question i lay my hands from the new og. Also thanks for posting such questions.
D. Sulphide present ----> no mosquito
Therefore no cause ---> no effect.
Option d says
No problem from sulphide therefore other insects are present
_________________

Regards,

S

Consider +1 KUDOS if you find this post useful

Kudos [?]: 719 [2], given: 80

Verbal Forum Moderator
Joined: 15 Apr 2013
Posts: 196

Kudos [?]: 896 [6], given: 30

Location: India
Concentration: General Management, Marketing
GMAT Date: 11-23-2015
GPA: 3.6
WE: Science (Other)
New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

03 Jul 2015, 09:50
6
This post received
KUDOS
Hello,

I think analysis of this question is as follows:

Premise 1: Garlic fields in region with high mosquito population

Premise 2: Since mosquitoes lay their eggs in standing water, ﬂooded ﬁelds would normally attract mosquitoes

Counter premise: Yet no mosquitoes were found in the ﬁelds.

Conclusion: Reason for low population of mosquito's is Diallyl sulﬁde, a major component of garlic, which is known to repel several species of insects, including mosquitoes.

So whats going on here? A field located in area of high mosquito population and additional risk of even higher mosquito population (due to standing water, flood etc) than the surrounding high population mosquito area.

Question stem: Which of following strengthen the argument???

I don't think no cause - no effect is appropriate justification for correct choice.

Argument can be strengthen in one of following ways:

1. Stating a unstated assumption

2. Support or elaborate existing premise

3. New support premise

etc.......

Analysis of answer choices:

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic.

Out of Scope

(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years.

Population of mosquito in a particular year has nothing to do with conclusion. Even if population is higher, same or smaller (at most we are only concerned about relationship of population from surrounding area), it does not have any impact

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi.

So that means, it this is the case then probably something else is responsible for low mosquito population. Possibly a weakner at most, but mainly it have no impact on argument.

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.

CORRECT. Well this is new supporting premise.

Many other species not repelled by diallyl sulﬁde are available in the fields. So, we have a reason to believe that since diallyl sulﬁde repeal mosquito not some other insect species hence mosquito population is low.

(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds.

Out of scope again. Similar to A

Regards
Vikas

Please hit kudos, if it helps. It will be very motivating.

Kudos [?]: 896 [6], given: 30

Manager
Joined: 11 Aug 2011
Posts: 194

Kudos [?]: 418 [4], given: 886

Location: United States
Concentration: Economics, Finance
GMAT Date: 10-16-2013
GPA: 3
WE: Analyst (Computer Software)
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

04 Jul 2015, 06:27
4
This post received
KUDOS
2
This post was
BOOKMARKED
[quote="vikasbansal227"]One summer, floods covered low-lying garlic ﬁelds situated in a region with a large mosquito population. Since mosquitoes lay their eggs in standing water, ﬂooded ﬁelds would normally attract mosquitoes, yet no mosquitoes were found in the ﬁelds. Diallyl sulﬁde, a major component of garlic, is known to repel several species of insects, including mosquitoes, so it is likely that diallyl sulﬁde from the garlic repelled the mosquitoes.

Which of the following, if true, most strengthens the argument?

The Gmat loves to test logic similar to thats given here in this argument.
Premise - No mosquites found in garlic fields flooded with water.
Conclusion - DS ( Dialllyl Sulphide) found in garlic repelled the mosquitoes.

This argument is of type X ->Y where X is DS and Y is mosquitoes repelled.
We can strengthen the argument in two ways :
Either we limit out other choices which can result in Y or we can provide additional evidence that X results in Y.

Here Choice D is such an answer choice where we are limiting other factors which can result in mosquito repeals.

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic.

(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years.

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi.

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.
Limiting out other potential factors which could repeal mosquitoes. If other insect species , which are not repelled by DS then it is possible that DS is responsible for mosquito repeals.
Lets take an opposite of this answer choice - If many other insect species were also not found in the fields this particular year - this would mean that some other factor such as maybe extreme environment or poor water quality could result in insect species getting repelled (including mosquitoes).

(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds.
_________________

Kudos me if you like my post !!!!

Kudos [?]: 418 [4], given: 886

Manager
Joined: 06 Aug 2013
Posts: 91

Kudos [?]: 4 [0], given: 17

Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

12 Sep 2015, 23:39
is it just me finding the language/subject matter of the CR arguments/options significantly different from that of the previous og versions??

Kudos [?]: 4 [0], given: 17

Manager
Joined: 24 Jul 2011
Posts: 228

Kudos [?]: 53 [0], given: 93

Location: India
GMAT 1: 570 Q50 V19
GMAT 2: 650 Q49 V28
GMAT 3: 690 Q50 V34
WE: Information Technology (Investment Banking)
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

16 Oct 2015, 11:48
Unfortunately, I am also feeling the same

arnabs wrote:
is it just me finding the language/subject matter of the CR arguments/options significantly different from that of the previous og versions??

_________________

Middle of nowhere!

Kudos [?]: 53 [0], given: 93

Director
Joined: 10 Mar 2013
Posts: 589

Kudos [?]: 492 [1], given: 200

Location: Germany
Concentration: Finance, Entrepreneurship
GMAT 1: 580 Q46 V24
GPA: 3.88
WE: Information Technology (Consulting)
New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

22 Nov 2015, 15:33
1
This post received
KUDOS
WillGetIt wrote:
One summer, floods covered low-lying garlic ﬁelds situated in a region with a large mosquito population. Since mosquitoes lay their eggs in standing water, ﬂooded ﬁelds would normally attract mosquitoes, yet no mosquitoes were found in the ﬁelds. Diallyl sulﬁde, a major component of garlic, is known to repel several species of insects, including mosquitoes, so it is likely that diallyl sulﬁde from the garlic repelled the mosquitoes.

Which of the following, if true, most strengthens the argument?

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic.

(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years.

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi.

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.

(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds.

Regards
Vikas

Please hit kudos if you like this post

To be honest it's a really poorly constructed question for an official one. So we are looking fot something that says that garlic field repelled the mosquitoes...

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic. --> clearly out of scope
(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years. --> Great, if true it only weakens the argument that garlic fields repelled mosquitoes

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi -->one more weakener, if garlic plants have beend killed, so if garlic fields have been killed, then it's 100% that somethin other then garlic field repelled insects...
(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer --> derived on the answer choices by POE, as this answer choice doesn't convince me, BUT others are just worse....
(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds --> we are interested in the effect of garlic fields on insects... actually one more weakener
_________________

When you’re up, your friends know who you are. When you’re down, you know who your friends are.

Share some Kudos, if my posts help you. Thank you !

800Score ONLY QUANT CAT1 51, CAT2 50, CAT3 50
GMAT PREP 670
MGMAT CAT 630
KAPLAN CAT 660

Kudos [?]: 492 [1], given: 200

Intern
Joined: 05 Jan 2016
Posts: 21

Kudos [?]: 1 [1], given: 56

Location: India
Concentration: Finance, Strategy
WE: Information Technology (Computer Software)
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

04 Oct 2016, 01:23
1
This post received
KUDOS
D as it is specifying that insects which are not repelled by sulfide were found in the flooded fields which means sulfide worked on mosquitoes.

Kudos [?]: 1 [1], given: 56

Manager
Joined: 01 Sep 2016
Posts: 118

Kudos [?]: 11 [0], given: 92

Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

24 Dec 2016, 06:41
Thank you for pointing out the problem with B>

WillGetIt wrote:
Hello,

I think analysis of this question is as follows:

Premise 1: Garlic fields in region with high mosquito population

Premise 2: Since mosquitoes lay their eggs in standing water, ﬂooded ﬁelds would normally attract mosquitoes

Counter premise: Yet no mosquitoes were found in the ﬁelds.

Conclusion: Reason for low population of mosquito's is Diallyl sulﬁde, a major component of garlic, which is known to repel several species of insects, including mosquitoes.

So whats going on here? A field located in area of high mosquito population and additional risk of even higher mosquito population (due to standing water, flood etc) than the surrounding high population mosquito area.

Question stem: Which of following strengthen the argument???

I don't think no cause - no effect is appropriate justification for correct choice.

Argument can be strengthen in one of following ways:

1. Stating a unstated assumption

2. Support or elaborate existing premise

3. New support premise

etc.......

Analysis of answer choices:

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic.

Out of Scope

(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years.

Population of mosquito in a particular year has nothing to do with conclusion. Even if population is higher, same or smaller (at most we are only concerned about relationship of population from surrounding area), it does not have any impact

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi.

So that means, it this is the case then probably something else is responsible for low mosquito population. Possibly a weakner at most, but mainly it have no impact on argument.

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.

CORRECT. Well this is new supporting premise.

Many other species not repelled by diallyl sulﬁde are available in the fields. So, we have a reason to believe that since diallyl sulﬁde repeal mosquito not some other insect species hence mosquito population is low.

(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds.

Out of scope again. Similar to A

Regards
Vikas

Please hit kudos, if it helps. It will be very motivating.

Kudos [?]: 11 [0], given: 92

Manager
Joined: 23 Jun 2009
Posts: 199

Kudos [?]: 110 [0], given: 138

Location: Brazil
GMAT 1: 470 Q30 V20
GMAT 2: 620 Q42 V33
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

14 Feb 2017, 12:43
WillGetIt wrote:

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.

Please hit kudos if you like this post

The right option prevents the argument from falling if someone comes and say:

"Well, what if other insect species were also not found on the field"

So, the effect of D.S. on the repelling of mosquitoes becomes "truer"

Kudos [?]: 110 [0], given: 138

Intern
Joined: 03 Jun 2012
Posts: 6

Kudos [?]: [0], given: 16

Concentration: General Management, Marketing
GPA: 3.8
WE: Information Technology (Computer Software)
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

03 Jul 2017, 04:25
(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.

It can be explained as follows :

Here it says 'Many' ( or Most ) , so % of insect species >=50%
So there are around < 50% of the insect species those are repelled by DS.

So it supports "diallyl sulﬁde from the garlic repelled the mosquitoes".

Kudos me if my post helps you

Kudos [?]: [0], given: 16

VP
Status: Learning
Joined: 20 Dec 2015
Posts: 1088

Kudos [?]: 89 [0], given: 564

Location: India
Concentration: Operations, Marketing
GMAT 1: 670 Q48 V36
GRE 1: 314 Q157 V157
GPA: 3.4
WE: Manufacturing and Production (Manufacturing)
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

07 Jul 2017, 08:53
The answer is D
The argument talks about flood and then the risk of mosquitoes breeding in the standing water yet there no mosquitoes were found .The reason cited for this the presence of Diallyl sulﬁde .The substance kills mosques toes .
Out of the very other option only option D strengthens the argument that Diallyl sulﬁde is responsible for killing of mosquitoes because there were insects throughout the summer that were not harmed by the substance.
_________________

We are more often frightened than hurt; and we suffer more from imagination than from reality

Kudos [?]: 89 [0], given: 564

Intern
Joined: 24 May 2014
Posts: 1

Kudos [?]: [0], given: 0

Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

26 Jul 2017, 10:26
For better understanding, please note that an argument can also be made stronger by presenting a possible counter premise &
refuting it

Argument says : High Population of Mosquitoes -> Flood -> No Mosquito || Hence, Garlic is responsible for No Mosquito

Here, the author assumes that only some xyz from garlic is responsible for repelling mosquitoes and, there are no other factors such as the flood itself:

what if there were some other factors (eg: flood)? [counter premise]

[refuting counter premise] if flood was responsible then all insects, including mosquitoes would have been gone.. but flood was not responsible because only mosquitoes were gone (not all insects) (Option D)

"had there been other factors, no insect would have been found on the flooded fields (both those which are repelled by Diallyl sulﬁde & those which are not)"

Since we have to make our belief in the conclusion stronger, we are refuting the possibility of "other factors" by Option D

hope this helps

Since this is an OG question, we have to make peace with it..

Kudos [?]: [0], given: 0

Manager
Joined: 27 Dec 2016
Posts: 195

Kudos [?]: 48 [0], given: 219

Concentration: Social Entrepreneurship, Nonprofit
GPA: 3.65
WE: Sales (Consumer Products)
Re: New CR Question from OG 2016 (Garlic Fields) [#permalink]

### Show Tags

18 Oct 2017, 06:36
WillGetIt wrote:
One summer, floods covered low-lying garlic ﬁelds situated in a region with a large mosquito population. Since mosquitoes lay their eggs in standing water, ﬂooded ﬁelds would normally attract mosquitoes, yet no mosquitoes were found in the ﬁelds. Diallyl sulﬁde, a major component of garlic, is known to repel several species of insects, including mosquitoes, so it is likely that diallyl sulﬁde from the garlic repelled the mosquitoes.

Which of the following, if true, most strengthens the argument?

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic.

(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years.

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi.

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.

(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds.

Regards
Vikas

Please hit kudos if you like this post

My analysis :

(A) Diallyl sulﬁde is also found in onions but at concentrations lower than in garlic.
Irrelevant

(B) The mosquito population of the region as a whole was signiﬁcantly smaller during the year in which the ﬂooding took place than it had been in previous years.
Where is diallyl sulfide here? We can't find any relationship with diallyl sulfide. Incorrect.
Moreover, if last year there were no flood, how mosquito could grow when garlic releases the diallyl sulfide?

(C) By the end of the summer, most of the garlic plants in the ﬂooded ﬁelds had been killed by waterborne fungi.
Weaken. It says that there is another reason rather than sulfide.

(D) Many insect species not repelled by diallyl sulﬁde were found in the ﬂooded garlic ﬁelds throughout the summer.
Correct. It strengthens our argument.

(E) Mosquitoes are known to be susceptible to toxins in plants other than garlic, such as marigolds.
Irrelevant.
_________________

There's an app for that - Steve Jobs.

Kudos [?]: 48 [0], given: 219

Re: New CR Question from OG 2016 (Garlic Fields)   [#permalink] 18 Oct 2017, 06:36
Display posts from previous: Sort by

# New CR Question from OG 2016 (Garlic Fields)

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.