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The interstitial nucleus, a sub-region of the brain’s hypothalamus, is

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The interstitial nucleus, a sub-region of the brain’s hypothalamus, is  [#permalink]

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New post Updated on: 09 Oct 2018, 06:18
2
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

54% (02:16) correct 46% (02:25) wrong based on 183 sessions

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The interstitial nucleus, a sub-region of the brain’s hypothalamus, is typically smaller for male cats than for female cats. A neurobiologist performed autopsies on male cats who died from disease X, a disease affecting no more than 0.5 percent of male cats, and found that these male cats had interstitial nuclei that were as large as those generally found in female cats. Thus, the size of the interstitial nucleus determines whether or not male cats can contract disease X, but, the hypothalamus is known not to be causally linked to disease Y, and disease X is a subtype of disease Y.

The two portions in boldface play which of the following roles?


(A) The first is a fact in support of the consideration that is one of two points of this argument; the second is the alternative point that weighs against the first.

(B) The first is an evidence that supports the consideration that the argument includes; the second is the fact that weighs against that consideration that could be drawn from the first.

(C) The first is a general principle that is against the conclusion; the second is that conclusion.

(D) The first is an evidence that supports the conclusion; the second is an exceptional example.

(E) The first is a fact in support of the conclusion that the argument depends on; the second is a fact that is against the first one.

Originally posted by ruplun on 27 May 2013, 08:12.
Last edited by Bunuel on 09 Oct 2018, 06:18, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
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Re: The interstitial nucleus, a sub-region of the brain’s hypothalamus, is  [#permalink]

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New post 28 May 2013, 23:22
5
The conclusion is "Thus, the size of the interstitial nucleus determines whether or not male cats can contract disease X". The first boldface is a premise (fact/evidence) supporting the conclusion - eliminate C. The second boldface is a counterpoint (fact/evidence) that works against the conclusion (not against the first boldface) - eliminate A, D & E.

Answer - B

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Re: The interstitial nucleus, a sub-region of the brain’s hypothalamus, is  [#permalink]

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New post 09 Oct 2018, 06:20
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).

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Re: The interstitial nucleus, a sub-region of the brain’s hypothalamus, is   [#permalink] 09 Oct 2018, 06:20
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