Last visit was: 17 May 2024, 23:32 It is currently 17 May 2024, 23:32
Close
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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
SORT BY:
Date
Tags:
Show Tags
Hide Tags
Alum
Joined: 19 Mar 2012
Posts: 4340
Own Kudos [?]: 51514 [20]
Given Kudos: 2326
Location: United States (WA)
Concentration: Leadership, General Management
Schools: Ross '20 (M)
GMAT 1: 760 Q50 V42
GMAT 2: 740 Q49 V42 (Online)
GMAT 3: 760 Q50 V42 (Online)
GPA: 3.8
WE:Marketing (Non-Profit and Government)
Send PM
Alum
Joined: 19 Mar 2012
Posts: 4340
Own Kudos [?]: 51514 [3]
Given Kudos: 2326
Location: United States (WA)
Concentration: Leadership, General Management
Schools: Ross '20 (M)
GMAT 1: 760 Q50 V42
GMAT 2: 740 Q49 V42 (Online)
GMAT 3: 760 Q50 V42 (Online)
GPA: 3.8
WE:Marketing (Non-Profit and Government)
Send PM
Board of Directors
Joined: 01 Sep 2010
Posts: 4422
Own Kudos [?]: 33060 [0]
Given Kudos: 4477
Send PM
User avatar
Manager
Manager
Joined: 30 May 2013
Posts: 126
Own Kudos [?]: 362 [1]
Given Kudos: 72
Location: India
Concentration: Entrepreneurship, General Management
GPA: 3.82
Send PM
Re: CR - Strengthen the argument [#permalink]
1
Kudos
souvik101990 wrote:

Strengthen/Weaken exercise



The prairie vole, a small North American grassland rodent, breeds year around, and a group of voles living togather consists primarily of an extended family, often including two or more litters. Voles commonly live in large groups from late autumn to winter; from spring thru early autumn, however, most voles live in far smaller groips. The seasonal variation in groups size can probably be explained by a seasonal variation in mortality among young voles.

Which of the following, if true, provides the strongest support for the explanation above?

A) It is the spring and in the early summer that prairie vole communities generally contain the highest proportion of young voles.
B) Prairie vole populations vary dramatically in size from year to year.
C) The prairie vole subsists primarily on broad-leaved plants that are abundant only in spring.
D) Winters in prairie vole's habitat are often harsh, with temperatures that drop well below freezing.
E) Snakes, a major predator of young prairie voles, or active only from spring thru early autumn.

I will post answer and explanation tomorrow. Let's get this party going.
This is an official question. Please do not google. Try it yourself.



I would like to answer to this
I pick E

Conclusion: The seasonal variation in groups size can probably be explained by a seasonal variation in mortality among young voles
Which says the seasonal variation in group soze is explained by variation in mortality rate caused seasonally
Assumption: 1) either they die because of season change (or) Die because of some natural (or) split and live because of their nature for each season

So i picked E.

Waiting for Answer

Thanks,
Swami.
Director
Director
Joined: 22 Mar 2013
Status:Everyone is a leader. Just stop listening to others.
Posts: 611
Own Kudos [?]: 4603 [0]
Given Kudos: 235
Location: India
GPA: 3.51
WE:Information Technology (Computer Software)
Send PM
Re: CR - Strengthen the argument [#permalink]
IMO E.

Only E explains the seasonal factor which reduces vole population between sprig and autumn.

C and D need too much assumptions to churn out the connection between seasonal population change.

A and B does not address seasonal population change.
avatar
Intern
Intern
Joined: 10 Mar 2014
Posts: 3
Own Kudos [?]: 5 [0]
Given Kudos: 1
Location: India
Concentration: Strategy, Operations
GMAT 1: 640 Q48 V28
GPA: 3.5
WE:General Management (Manufacturing)
Send PM
Re: CR - Strengthen the argument [#permalink]
I have recently given my GMAT official exam. I got this exact question in my GMAT verbal section and i answered option E. It it the correct answer?
GMAT Club Legend
GMAT Club Legend
Joined: 03 Oct 2013
Affiliations: CrackVerbal
Posts: 4944
Own Kudos [?]: 7665 [0]
Given Kudos: 216
Location: India
Send PM
Re: CR - Strengthen the argument [#permalink]
The right answer here should be E. When you look to support a conclusion, you should first identify what that conclusion is. In this case, it's that "something affects the population in spring - autumn".

Hence, we want an answer that either suggests the population will be lower in the spring, or that will be higher in the winter.

Once you eliminate the opposites and irrelevant answers, E is all you should have left.

- Matoo
Manager
Manager
Joined: 28 Jan 2019
Posts: 72
Own Kudos [?]: 64 [0]
Given Kudos: 121
Location: India
GMAT 1: 700 Q49 V36
GPA: 4
WE:Manufacturing and Production (Manufacturing)
Send PM
Re: CR - Strengthen the argument [#permalink]
souvik101990 wrote:

Strengthen/Weaken exercise



The prairie vole, a small North American grassland rodent, breeds year around, and a group of voles living togather consists primarily of an extended family, often including two or more litters. Voles commonly live in large groups from late autumn to winter; from spring thru early autumn, however, most voles live in far smaller groips. The seasonal variation in groups size can probably be explained by a seasonal variation in mortality among young voles.

Which of the following, if true, provides the strongest support for the explanation above?

A) It is the spring and in the early summer that prairie vole communities generally contain the highest proportion of young voles.
B) Prairie vole populations vary dramatically in size from year to year.
C) The prairie vole subsists primarily on broad-leaved plants that are abundant only in spring.
D) Winters in prairie vole's habitat are often harsh, with temperatures that drop well below freezing.
E) Snakes, a major predator of young prairie voles, or active only from spring thru early autumn.

I will post answer and explanation tomorrow. Let's get this party going.
This is an official question. Please do not google. Try it yourself.


The question says the seasonal variation in group sizes can probably be explained by seasonal variation in mortality among young volves, and for me, option D answers this. The extremely low temperatures in winters is what increases the mortality rate of young volves. Additional information strengthening the conclusion of the statement.

I would avoid option E, as the use of "only" makes it too extreme.

Thoughts?
GMAT Club Legend
GMAT Club Legend
Joined: 03 Oct 2013
Affiliations: CrackVerbal
Posts: 4944
Own Kudos [?]: 7665 [0]
Given Kudos: 216
Location: India
Send PM
Re: CR - Strengthen the argument [#permalink]
Quote:
The question says the seasonal variation in group sizes can probably be explained by seasonal variation in mortality among young volves, and for me, option D answers this. The extremely low temperatures in winters is what increases the mortality rate of young volves. Additional information strengthening the conclusion of the statement.

I would avoid option E, as the use of "only" makes it too extreme.

Thoughts?


OhsostudiousMJ
When you look to eliminate an extreme answer choice, do not do so solely on the basis of the presence of a word like only, or always. What you have to consider is the meaning and implication of the statement itself. You're not looking to suggest whether the option is "true" or not, you are looking to analyse how it impacts the argument.

In E, when it says "only present in the spring", what it tells us is that it's not there in the other time of the year, when the voles are many. So when the snakes are active, the voles are few, when they are not, the voles are many. This is a statement that clearly supports the idea that there is a mortality from spring to autumn.

D in fact suggests the opposite of what we are looking for. Sure, harsh winters means few voles in the winter. But this is precisely when we've been told that there are many of them. So if anything, this suggests that the winter has no effect.

- Matoo
Manager
Manager
Joined: 28 Jan 2019
Posts: 72
Own Kudos [?]: 64 [0]
Given Kudos: 121
Location: India
GMAT 1: 700 Q49 V36
GPA: 4
WE:Manufacturing and Production (Manufacturing)
Send PM
Re: CR - Strengthen the argument [#permalink]
MatooCrackVerbal wrote:
Quote:
The question says the seasonal variation in group sizes can probably be explained by seasonal variation in mortality among young volves, and for me, option D answers this. The extremely low temperatures in winters is what increases the mortality rate of young volves. Additional information strengthening the conclusion of the statement.

I would avoid option E, as the use of "only" makes it too extreme.

Thoughts?


OhsostudiousMJ
When you look to eliminate an extreme answer choice, do not do so solely on the basis of the presence of a word like only, or always. What you have to consider is the meaning and implication of the statement itself. You're not looking to suggest whether the option is "true" or not, you are looking to analyse how it impacts the argument.

In E, when it says "only present in the spring", what it tells us is that it's not there in the other time of the year, when the voles are many. So when the snakes are active, the voles are few, when they are not, the voles are many. This is a statement that clearly supports the idea that there is a mortality from spring to autumn.

D in fact suggests the opposite of what we are looking for. Sure, harsh winters means few voles in the winter. But this is precisely when we've been told that there are many of them. So if anything, this suggests that the winter has no effect.

- Matoo


Thanks for the response.

I understand now. I had misunderstood the question initially.
User avatar
Non-Human User
Joined: 01 Oct 2013
Posts: 17312
Own Kudos [?]: 851 [0]
Given Kudos: 0
Send PM
Re: CR - Strengthen the argument [#permalink]
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
GMAT Club Bot
Re: CR - Strengthen the argument [#permalink]
Moderators:
GMAT Club Verbal Expert
6929 posts
GMAT Club Verbal Expert
238 posts
CR Forum Moderator
832 posts