Last visit was: 19 Nov 2025, 05:34 It is currently 19 Nov 2025, 05:34
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
User avatar
abhinava
Joined: 23 Mar 2007
Last visit: 09 Apr 2010
Posts: 74
Own Kudos:
Posts: 74
Kudos: 12
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
grad_mba
Joined: 13 Mar 2007
Last visit: 24 May 2011
Posts: 350
Own Kudos:
Schools:MIT Sloan
Posts: 350
Kudos: 579
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
abhi426
Joined: 21 Oct 2005
Last visit: 26 Mar 2008
Posts: 32
Own Kudos:
Posts: 32
Kudos: 126
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
ronron
Joined: 22 May 2007
Last visit: 16 Jul 2008
Posts: 68
Own Kudos:
Posts: 68
Kudos: 4
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I go for B.

Please explain why C is so obvious too you?

I think there is more support coming from the fact that the two substances are insect repellers rather then the link between rainseason and presence of insects.
User avatar
r019h
Joined: 04 Jun 2007
Last visit: 07 Mar 2008
Posts: 146
Own Kudos:
Posts: 146
Kudos: 691
Kudos
Add Kudos
Bookmarks
Bookmark this Post
ronron
I go for B.

Please explain why C is so obvious too you?

I think there is more support coming from the fact that the two substances are insect repellers rather then the link between rainseason and presence of insects.


We want something that will strengthen the hypothesis that monkeys are rubbing the milipedes mainly to prevent mosquito bites, answers A, B, D & E do not link mosquitoes with monkey's milipede usage. Whereas C shows monkeys rarely rub milipedes on their bodies but do so during peak mosquito season, thus drawing a relation between mosquitos and their milipede rubbing activity, strengthening the scientists' hypothesis.

Therefore, the answer is a clear C.
User avatar
ng
Joined: 26 Feb 2007
Last visit: 01 Sep 2007
Posts: 52
Own Kudos:
Posts: 52
Kudos: 2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
C.
User avatar
rgulati
Joined: 28 Jun 2005
Last visit: 03 Jan 2008
Posts: 5
Own Kudos:
Posts: 5
Kudos: 2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
abhinava
Capuchin monkeys often rub their bodies with a certain type of millipede. Laboratorytests show that secretions from the bodies of these millipedes are rich in two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate capuchins. Some scientists hypothesize that the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes.

Which of the following, if true, provides the most support for the scientists’ hypothesis?

A. A single millipede often gets passed around among several capuchins, all of whom rub their bodies with it.
B The two chemicals that repel mosquitoes also repel several other varieties of insects.
C. The capuchins rarely rub their bodies with the millipedes except during the rainy season, when mosquito populations are at their peak.
D. Although the capuchins eat several species of insects, they do not eat the type of millipede they use to rub their bodies.
E. The two insect-repelling chemicals in the secretions of the millipedes are carcinogenic for humans but do not appear to be carcinogenic for capuchins



This is how I thought

A - ruled out (irrelevant)
B - several other varieties of insects (ruled out because we only need to focus on mosquitoes)
C - "rarely". The passage clearly states "often rub". So according to me, ruled out
E - ruled out (irrelevant)

I believe "D" is the best choice because "Although the capuchins eat several species of insects, they do not eat the type of millipede they use to rub their bodies BECAUSE doing so helps protect them from mosquitoes.



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Critical Reasoning (CR) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
Moderators:
GMAT Club Verbal Expert
7443 posts
GMAT Club Verbal Expert
231 posts
188 posts