It is currently 20 Sep 2017, 09:42

### 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

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

# Capuchin monkeys often rub their bodies with a certain type

Author Message
Manager
Joined: 09 Sep 2004
Posts: 54

Kudos [?]: 164 [0], given: 0

Capuchin monkeys often rub their bodies with a certain type [#permalink]

### Show Tags

09 Sep 2004, 12:19
00:00

Difficulty:

(N/A)

Question Stats:

33% (01:58) correct 67% (02:48) wrong based on 9 sessions

### HideShow timer Statistics

Capuchin monkeys often rub their bodies with a certain type of millipede. Laboratory tests 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 scientistsâ€™ 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.

Kudos [?]: 164 [0], given: 0

Director
Joined: 16 Jun 2004
Posts: 891

Kudos [?]: 65 [0], given: 0

### Show Tags

09 Sep 2004, 12:31
D. reasons...

A - refers to single millipede being passed on, while the stimulus refers to secretions from multiple millipedes. So out.
B - If it repels other insects then the conclusion of the experiment that proves it only against mosquitoes is loosing strength. So out.
C - Close enough, but the stimulus says that capuchins rub 'often'. So out.
D- They are saving it for the specific purpose.
E - out of scope

Kudos [?]: 65 [0], given: 0

SVP
Joined: 16 Oct 2003
Posts: 1800

Kudos [?]: 170 [0], given: 0

### Show Tags

09 Sep 2004, 13:16
I will go with C. It says that they do it only in rainy season when the mosquitoes proliferate. This is sufficient to say that they know they need some protection.

Kudos [?]: 170 [0], given: 0

Manager
Joined: 28 Jul 2004
Posts: 179

Kudos [?]: 18 [0], given: 0

### Show Tags

09 Sep 2004, 14:29
My choice is C. I think D is a bit more pulling than really needed.

Kudos [?]: 18 [0], given: 0

Intern
Joined: 19 Aug 2004
Posts: 47

Kudos [?]: 7 [0], given: 0

### Show Tags

09 Sep 2004, 15:16
I will go with D.

The assumption is that monkeys in fact realize the importance of the millipede. D states this assumption most clearly. C is a close choice but it, in a way, undermines the importance of the millipede.

Kudos [?]: 7 [0], given: 0

Director
Joined: 13 Nov 2003
Posts: 960

Kudos [?]: 167 [0], given: 0

Location: Florida

### Show Tags

09 Sep 2004, 20:06
I am for C.
Relate the logic with the conclusion; the only reason why monkeys rub theri bodies with millipedes is to get rid of mosquitoes. They dont' rub/or rarely rub when there are no mosquitoes.

D -- they might eat millipedes after rubbing with them... yikes

Kudos [?]: 167 [0], given: 0

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4285

Kudos [?]: 522 [0], given: 0

### Show Tags

09 Sep 2004, 20:15
1 min. C it is and agree with dj's explanation
_________________

Best Regards,

Paul

Kudos [?]: 522 [0], given: 0

Director
Joined: 16 Jun 2004
Posts: 891

Kudos [?]: 65 [0], given: 0

### Show Tags

10 Sep 2004, 05:37
My first choice was C. However, I went to D because the stimulus says that Capuchins 'often' rub 'certain type of a milipede' - whiel C says that they do it rarely.

Also Only D has a referrant to 'certain type of millipede' - all others generalise it as millipedes. Else the question is too straightforward.

Kudos [?]: 65 [0], given: 0

Manager
Joined: 09 Sep 2004
Posts: 54

Kudos [?]: 164 [0], given: 0

### Show Tags

10 Sep 2004, 08:35
The OA given is E. Can anyone think of how E can support the scientist's hypothesis. I thought it was a clear C.

Kudos [?]: 164 [0], given: 0

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4285

Kudos [?]: 522 [0], given: 0

### Show Tags

10 Sep 2004, 09:08
There is no support whatsoever for E. The OA must be wrong and I'm sure C must be it
_________________

Best Regards,

Paul

Kudos [?]: 522 [0], given: 0

Senior Manager
Joined: 22 Jun 2004
Posts: 392

Kudos [?]: 9 [0], given: 0

Location: Bangalore, India

### Show Tags

10 Sep 2004, 09:24
I am getting it as E.

A - ruled out but very funny answer. Monkeys keep passing one to another - hard to imagine too!!

B - 'other insects' new word and out of scope.

C - Protection from mosquitoes is required 'in general' not in rainy season or some other reason. Out of scope. For that matter, during rainy season, they can go somewhere else too to protect themselves from mosquitoes!! The stem does not support this at all.

D - 'eat' and 'rub' tough to correlate.

E - perfect!! They rub and if the secretions are carcenogenic, then they die and rather than protect themselves, they kill themselves in the process. The argument clealy falls apart, if we negate this. Thus, E is chosen.

Do correct me if I am wrong.

mba4me wrote:
Capuchin monkeys often rub their bodies with a certain type of millipede. Laboratory tests 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 scientistsâ€™ 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.

_________________

Awaiting response,

Thnx & Rgds,
Chandra

Kudos [?]: 9 [0], given: 0

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4285

Kudos [?]: 522 [0], given: 0

### Show Tags

10 Sep 2004, 09:46

E) Yes, the chemicals are not carcinogenic and the monkeys would not die by rubbing the millepedes against themselves but does it address the question of how the rubbing will protect the monkeys against mosquitos? An assumption would what would explain how the rubbing would protect them against mosquitos? C does the job nicely by saying that monkeys rub the millepedes specifically during times there are a lot of mosquitos. This reinforces the idea that the millepedes protect them against mosquitos during those "peak seasons" --> conclusion: millepede rubbing DOES protect monkeys against mosquitos
_________________

Best Regards,

Paul

Kudos [?]: 522 [0], given: 0

Senior Manager
Joined: 22 Jun 2004
Posts: 392

Kudos [?]: 9 [0], given: 0

Location: Bangalore, India

### Show Tags

10 Sep 2004, 11:34
Hi Paul,

Somehow, I could not digest the analysis.
After reading the stem, the conclusion is the hyposthesis that monkeys rub millipedes to protect themselves.
If we have to support the hypothesis, we need to prove that it does not affect in other ways. E does it.
I feel C is extraneous becuase of 'rainy season'. What about summer season/winter season? I need to assume too many hereto make C as the answer. Thus, E is a clear choice, I believe. Were E not there, C would be the only choice.

Thus, I prefer E to C because the stem does not talk about peak seasons or weak seasons. Is mosquito biting okay during weak seasons? I donot think so.

Paul wrote:

E) Yes, the chemicals are not carcinogenic and the monkeys would not die by rubbing the millepedes against themselves but does it address the question of how the rubbing will protect the monkeys against mosquitos? An assumption would what would explain how the rubbing would protect them against mosquitos? C does the job nicely by saying that monkeys rub the millepedes specifically during times there are a lot of mosquitos. This reinforces the idea that the millepedes protect them against mosquitos during those "peak seasons" --> conclusion: millepede rubbing DOES protect monkeys against mosquitos

_________________

Awaiting response,

Thnx & Rgds,
Chandra

Kudos [?]: 9 [0], given: 0

Senior Manager
Joined: 16 Aug 2004
Posts: 320

Kudos [?]: 52 [0], given: 0

Location: India

### Show Tags

11 Sep 2004, 07:38

I can hardly see any connect of E with the question stem.
Even if I try to retrofit the answer, I'm probably going beyond the scope.

Kudos [?]: 52 [0], given: 0

Director
Joined: 25 Aug 2007
Posts: 930

Kudos [?]: 1461 [0], given: 40

WE 1: 3.5 yrs IT
WE 2: 2.5 yrs Retail chain

### Show Tags

25 May 2010, 02:50
Tough one. I marked D but none other than E supports somehow the argument.
_________________

Tricky Quant problems: http://gmatclub.com/forum/50-tricky-questions-92834.html
Important Grammer Fundamentals: http://gmatclub.com/forum/key-fundamentals-of-grammer-our-crucial-learnings-on-sc-93659.html

Kudos [?]: 1461 [0], given: 40

VP
Joined: 17 Feb 2010
Posts: 1480

Kudos [?]: 729 [0], given: 6

### Show Tags

27 May 2010, 11:22
my pick is (C).

Kudos [?]: 729 [0], given: 6

Senior Manager
Joined: 24 Jul 2009
Posts: 287

Kudos [?]: 165 [0], given: 0

### Show Tags

27 May 2010, 16:33
IMHO, C.
I don't agree with E as OA.

Kudos [?]: 165 [0], given: 0

Manager
Joined: 28 Feb 2010
Posts: 167

Kudos [?]: 36 [0], given: 33

WE 1: 3 (Mining Operations)

### Show Tags

27 May 2010, 18:24
IMO C....

E cannot be the answer, as the question stem talks about debitation, and the option discusses about Carcinogens. We cannot assume that carciongens is the ONLY cause behing debilitation.This goes too far in assumption.

However Option C states that yet the other chemical causes debilitation, still the monkeys are using it. It justifies the use during peak mosquito period.

It would be nice to hear other explanations...
_________________

Regards,
Invincible...
"The way to succeed is to double your error rate."
"Most people who succeed in the face of seemingly impossible conditions are people who simply don't know how to quit."

Kudos [?]: 36 [0], given: 33

Manager
Joined: 24 May 2010
Posts: 65

Kudos [?]: 22 [0], given: 4

### Show Tags

27 May 2010, 20:51
IMO C. C clearly says that it is during the season when mosquito population is at peak, when they rub with millipedes. I suppose my reasoning it right

Kudos [?]: 22 [0], given: 4

Joined: 19 Feb 2010
Posts: 391

Kudos [?]: 193 [0], given: 76

### Show Tags

28 May 2010, 11:12
mba4me wrote:
Capuchin monkeys often rub their bodies with a certain type of millipede. Laboratory tests 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 scientistsâ€™ 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.

Hypothesis: monkeys rub their bodies with the insect to protect from mosquitoes.
Which of the following supports the most this hypothesis:
E. Doesn't appear to support the hypothesis.
D. Somehow supports the hypothesis.
C. Shows that they do it in purpose, when needed, thus greatly supporting the hypothesis.
A and B don't relate directly to the hypothesis.

I think C is the best choice.

Kudos [?]: 193 [0], given: 76

Re: CR - monkeys   [#permalink] 28 May 2010, 11:12
Similar topics Replies Last post
Similar
Topics:
CR on millipedes on monkeys 2 29 Sep 2007, 12:34
Sociologists often refer to certain age groups in this country in term 0 12 Aug 2016, 05:59
Capuchin monkeys often rub their bodies with a certain type 0 27 Feb 2013, 21:30
Capuchin monkeys often rub their bodies with a certain type 10 19 Aug 2008, 03:06
Capuchin monkeys often rub their bodies with a certain type 8 02 Dec 2007, 09:46
Display posts from previous: Sort by