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# A substance derived from the Madagascar periwinkle, which

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29 Feb 2012, 07:21
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Question Stats:

37% (01:57) correct 63% (00:55) wrong based on 112 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,

The best suitable option is C according to me.
Though C is also wrong because it uses ",which " that makes the modifier non essential but it is supposeto be essential.

OA is E in which a derivative modifies The madgascar periwinkle which is wrong

[Reveal] Spoiler: OA

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29 Feb 2012, 07:50
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Look at the non-underlined part for clues:

,_______________ is cultivated in China as part => From this usage it is clear that we need a subject for the action verb "is cultivated "(what is cultivated) . Definitely the substance is not cultivated, neither is the derivative cultivated => A, B and C out. D is just absurd as that is used to modify patients ...

E is the obvious winner.

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29 Feb 2012, 11:22
Is it not the substance derived from ....... cultivated in china ???
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01 Mar 2012, 02:01
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shikhar wrote:
Is it not the substance derived from ....... cultivated in china ???

If there were no "is" in the original sentence, the usage would be correct

The substance derived from grass cultivated in china => here cultivated in china is modifying the noun (grass).

But you cannot say,

The substance derived from grass is cultivated in china => Incorrect. This says "The substance derived from grass" is actually cultivated => something that is absolutely absurd. The substance is not cultivated, the grass is cultivated.

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01 Mar 2012, 03:48
A simple way to look at this question is to ask:
What is cultivated in China?
1) Periwinkle
2) Substance

I still don't like the question because there is some ambiguity. For example: Marijuana is a substance and Marijuana can be cultivated. Although the actual drug is a derivative of the plant, or so you can argue.
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19 Sep 2012, 10:25
The original sentence sounds like the derivative itself is cultivated in China! ruling out E, which changes the intended meaning!
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19 Sep 2012, 11:56
shikhar wrote:
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,

The best suitable option is C according to me.
Though C is also wrong because it uses ",which " that makes the modifier non essential but it is supposeto be essential.

OA is E in which a derivative modifies The madgascar periwinkle which is wrong

Hi Shikhar-

Why don't we break the answer choices one by one and then zero-in on the best choice?

Lets come to option A- If you see the words marked in red- We cannot make out what these words are modifying (ambiguous)
Now option B- Just by looking at it you know the construction is wrong
Option D- The use of that is ambigous here.
Otion C- The thumb rule is 'which' must refer to the noun preceding the comma. In this case it looks ambigous
Option E- This fits best and also the sentence is more meaningful when compared to option C
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Re: A substance derived from the Madagascar periwinkle, which   [#permalink] 19 Sep 2012, 11:56
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