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# GMAC Test Prep Question

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Intern
Joined: 18 Nov 2010
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Kudos [?]: 22 [0], given: 8

GMAC Test Prep Question [#permalink]

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18 Nov 2010, 13:30
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Difficulty:

(N/A)

Question Stats:

100% (01:56) correct 0% (00:00) wrong based on 3 sessions

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Please could someone explain the rationale here. Correct Answer is D
[Reveal] Spoiler: OA

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Help 2.docx [72.11 KiB]

Kaplan GMAT Instructor
Joined: 21 Jun 2010
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Re: GMAC Test Prep Question [#permalink]

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18 Nov 2010, 15:40
2
KUDOS
Since we have a weakening question, let's begin by paraphrasing the argument:

What we learned in the lab about fullerenes will teach us about fullerenes outside of the lab.

Next, let's identify the author's assumption: laboratory fullerenes are substantially the same as real world fullerenes.

Finally, let's make our prediction. To weaken an argument, predict an answer that attacks the author's assumption. Here:

Lab fullerenes are significantly different than real world fullerenes.

Armed with our prediction, we attack the choices, looking for a match:

a) no distinction - eliminate.
b) no distinction - eliminate.
c) no distinction - eliminate.
d) a difference! If the naturally occurring fullerenes are unique, then what we learned in the lab won't teach us anything about the natural world. Choose (d)!

Since we found a match for our prediction, we should confidently choose (d) and move on. However, let's step into "review mode" and take a quick peek at (e):

e) no distinction - eliminate.
Re: GMAC Test Prep Question   [#permalink] 18 Nov 2010, 15:40
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# GMAC Test Prep Question

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