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Probability is one of the most important GMAT Quant topics because it often combines logic, counting, set theory, and permutations & combinations. Many students try to solve probability questions by listing every possible case, but GMAT probability...
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In Episode 7 of our GMAT Ninja CR series, we are rounding up the oddballs, the misfits, and the format-benders: EXCEPT, Fill-In-The-Blanks, and other unusual Critical Reasoning question types. When you see a question that ends with a literal blank line - Jun 04
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29 Apr 2024, 12:52
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
44% (01:28) correct
56%
(02:24)
wrong
based on 9
sessions
History
Date
Time
Result
Not Attempted Yet
Under laboratory conditions, fruit flies can learn to respond to odors that elicit no response from them in nature. Mutant fruit flies that cannot produce a certain enzyme are, however, incapable of such learning. These mutant flies respond to other odors just as ordinary fruit flies do. Thus it is unlikely that the enzyme's absence impairs the fruit flies' perception of odors, since presumably, fruit flies would not have an enzyme that was needed only for the perception of odors that fruit flies do not respond to in nature. Instead, what the enzyme's absence probably impairs is the fruit flies' ability to learn, since many researchers believe that this enzyme is somehow involved in the process of forming memories.
In the argument given, the two boldfaced portions play which of the following roles?
A. The first is evidence that has been used to corroborate a judgment that the argument contends is false; the second is that judgment.
B. The first is a hypothesis that the argument opposes; the second is a judgment that has been advanced in support of that hypothesis.
C. The first is the hypothesis that the argument as a whole seeks to establish; the second provides support for that hypothesis.
D. The first presents an explicit assumption that is introduced in arguing for the position that the argument adopts; the second provides evidence to support that position.
E. The first offers justification for an assumption that is explicitly made in the argument; the second states that assumption.
In the argument given, the two boldfaced portions play which of the following roles?
A. The first is evidence that has been used to corroborate a judgment that the argument contends is false; the second is that judgment.
B. The first is a hypothesis that the argument opposes; the second is a judgment that has been advanced in support of that hypothesis.
C. The first is the hypothesis that the argument as a whole seeks to establish; the second provides support for that hypothesis.
D. The first presents an explicit assumption that is introduced in arguing for the position that the argument adopts; the second provides evidence to support that position.
E. The first offers justification for an assumption that is explicitly made in the argument; the second states that assumption.
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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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29 Apr 2024, 12:56
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JJ.jj
Discussed here: https://gmatclub.com/forum/under-laboratory-conditions-fruit-flies-can-learn-to-respond-to-odors-414689.html
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!
02 Aug 2025, 11:08
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