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A substance derived from the Madagascar periwinkle, which

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Re: A substance derived from the Madagascar periwinkle, which  [#permalink]

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New post 19 Aug 2015, 08:32
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The whole idea is below:

Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated
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Re: A substance derived from the Madagascar periwinkle, which has proved u  [#permalink]

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New post 08 Mar 2016, 19:43
20. 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.

I believe understanding the meaning is crucial while solving this question..I cracked it under 1 minute...
A substance cannot be cultivated, thus, we need to look for an answer choice that would tell us that a tree or smth that can BE cultivated is actually cultivated.
only 1 answer choice is correctly written.


a. A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,
meaning error - a substance cannot be cultivated

b. A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle
same error. + a derivative is useful - but we need to specify what kind of derivative before the long modifier..

c. A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients
same meaning error.

d. The Madagascar periwinkle has a derivative which has proved useful in decreasing
strange one..I believe not written as needed.. nonetheless we don't have a subject for the verb is cultivated, because the periwinkle has a verb - has, which is not properly connected to the other verb.

e. The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,
good.
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A substance derived from the Madagascar periwinkle, which  [#permalink]

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New post 10 Jul 2016, 03:43
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Hi All,

I typically use the standard 3 step approach suggested by egmat :

Meaning analysis:

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.

Imagine that the wheat plant is cultivated and the flour is useful for a treatment. Now flour is a derivative of the plant, can the flour be cultivated ?

Now based on this analogy lets understand the original question:

What is useful in decreasing mortality ?
The derivative

What is cultivated ?
Madagascar Periwinkle.

Error Analysis:

1. "from the madagascar periwinkle, which has proved useful" --> "Which" always refer to the immediate preceding noun which in this case is the periwinkle. As per our meaning analysis "the derivative" is what is useful
2. " A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated " --> The striked out portion is providing more information about periwinkle and should be ignored to understand what is cultivated. A substance derived, ..., is cultivated --> This is incorrect as per our analysis

Answers analysis:

(A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,--> As pointed out in the error analysis

(B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle, --> A Derivative,..., is cultivated --> Incorrect as pointed in the error analysis.

(C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients,--> Derivative is cultivated--> As pointed in the error analysis, this distorts the meaning

(D) The Madagascar periwinkle has a derivative which has proved useful in decreasing mortality among young leukemia patients, that --> "that" has a hanging precedent noun. In this statement "that" can refer to patients

(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients, --> This correctly addresses the mistakes.

I hope this is helpful !

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Re: A substance derived from the Madagascar periwinkle, which  [#permalink]

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New post 23 Sep 2017, 07:29
This concept is based on the understanding of Madagascar periwinkle.

As the sentence talks about some derivative (or substance) - it is logical that we cannot cultivate a substance.

Hence, logically "is cultivated" refers to "Madagascar periwinkle" - Hence - THe only option that gives us this choice is E
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Re: A substance derived from the Madagascar periwinkle, which  [#permalink]

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New post 27 Sep 2017, 00:19
anonymousvn wrote:
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

(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,


Option A-Substance is not cultivated instead Periwinkle is cultivated

Option B -Derivative is not cultivated-statement b/w commas could be ignored.

Option C-Madagascar periwinkle derivative is not cultivated

Option D-Wrong construction

Option E-correct-Modifier between the commas correctly modifying Periwinkle, also if we ignore the statement between the comma, the sentence comes out to be Madagascar periwinkle is cultivated in china
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Re: A substance derived from the Madagascar periwinkle, which  [#permalink]

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New post 27 Sep 2017, 00:36
The answer should be E.
A. which incorrectly modifies Madagascar periwinkle.
B. Derivative changes the meaning....of the Medagascar periwinkle is far...
C. young lukemia patients is cultivated changes the meaning.
D. which has proved useful in decreasing is incomplete...decreasing what...
E. Seems correct


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Re: A substance derived from the Madagascar periwinkle, which  [#permalink]

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Re: A substance derived from the Madagascar periwinkle, which &nbs [#permalink] 11 Oct 2018, 05:07

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