A substance derived from the Madagascar periwinkle, which : GMAT Sentence Correction (SC)
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# A substance derived from the Madagascar periwinkle, which

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Intern
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02 May 2011, 13:37
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Difficulty:

35% (medium)

Question Stats:

31% (01:38) correct 69% (00:31) wrong based on 16 sessions

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33. A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care.
(A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,
(B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle,
(C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients,
(D) The Madagascar periwinkle has a derivative which has proved useful in decreasing mortality among young leukemia patients, that
(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,
[Reveal] Spoiler: OA
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02 May 2011, 22:28
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Expert's post
You can avoid most of the complexities of this problem by simply removing the modifier in the middle (as well as the added info at the end) and seeing what makes sense. Thus, we have the following:

(A) A substance derived from the Madagascar periwinkle is cultivated in China.
(B) A derivative is cultivated in China.
(C) A Madagascar periwinkle derivative is cultivated in China.
(D) The Madagascar periwinkle has a derivative that is cultivated in China.
(E) The Madagascar periwinkle is cultivated in China.

Note that every choice but E states that the derivative is cultivated in China. The periwinkle, a flower, can be cultivated. The derivative, a substance, would be produced (or, of course, derived).

I hope this helps!
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Dmitry Farber | Manhattan GMAT Instructor | New York

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03 May 2011, 06:37
DmitryFarber and amit2k9: Thanks for ur responses.. after reading ur responses, question seems like a very simple and easy question.
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15 Jul 2011, 04:13
Got it wrong but agree that E is the correct answer. Thanks Dmitry.
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17 Jul 2011, 20:14
Great explanation. Got it wrong as "B".
Re: 1000 SC Q33   [#permalink] 17 Jul 2011, 20:14
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