A powder derived from the North American Echinacea ﬂower, which has be

Question

A powder derived from the North American Echinacea ﬂower, which has been effective in preventing colds , is grown by many small farmers out West.

(A) A powder derived from the North American Echinacea ﬂower, which has been eﬀective in preventing colds,

(B) A derivative, which has been eﬀective in preventing colds, of the North American Echinacea ﬂower

(C) A North American Echinacea ﬂower derivative, which has been eﬀective in preventing colds

(D) The North American Echinacea ﬂower has a derivative which has been eﬀective in preventing colds, that

(E) The North American Echinacea flower, a derivative of which has been effective in preventing colds,

This question is a easy one , but I have a silly confusion on aswer choice E.

"Of which " refers to Echinacea flower so Can I ignore this as of which is not close to the noun it modifies ???

What is a scope of the rule "Close of noun " for noun modifiers.

Thanks

kuksbug · Answer

Hi, Check out this link, blog by e-gmat on noun modifiers. https://e-gmat.com/blogs/noun-noun-modi ... ny-entity/ Hope it helps

broall · Answer

Reformatted the question.

(A) A powder derived from the North American Echinacea ﬂower, which has been eﬀective in preventing colds, 
 "powder" cannot "be grown" 
(B) A derivative, which has been eﬀective in preventing colds, of the North American Echinacea ﬂower
 The same as A 
(C) A North American Echinacea ﬂower derivative, which has been eﬀective in preventing colds 
 The same as A 
(D) The North American Echinacea ﬂower has a derivative which has been eﬀective in preventing colds, that 
 "that" is ambiguos 
(E) The North American Echinacea flower, a derivative of which has been effective in preventing colds,
 Correct

varun4s · Answer

(A)  A powder  derived from the North American Echinacea ﬂower, which has been eﬀective in preventing colds, is grown   (A powder cannot be grown. Rather it is derived from flower) 
(B)  A derivative , which has been eﬀective in preventing colds, of the North American Echinacea ﬂower,  is grown   (Same as A) 
(C) A North American Echinacea ﬂower  derivative , which has been eﬀective in preventing colds is grown  (Same as A) 
(D) The North American Echinacea ﬂower has a derivative which has been eﬀective in preventing colds , that  is grown  (Comma before that is wrong) 
(E) The North American Echinacea  flower , a derivative of which has been effective in preventing colds,  is grown   (Correct)

Kudos please, if you like my explanation.

BloodDiamond · Answer

1. A powder derived from the North American Echinacea ﬂower, which has been effective in preventing colds, is grown by many small farmers out West.

(A) A powder derived from the North American Echinacea ﬂower, which has been eﬀective in preventing colds, 
(B) A derivative, which has been eﬀective in preventing colds, of the North American Echinacea ﬂower
(C) A North American Echinacea ﬂower derivative, which has been eﬀective in preventing colds 
(D) The North American Echinacea ﬂower has a derivative which has been eﬀective in preventing colds, that 
(E)   The North American Echinacea flower,  a derivative of which has been effective in preventing colds,  is grown

SV pair correct.

Hence E.

chesstitans · Answer

The key word here is "is grown". "a derivative powder prevents cold" still makes sense.

itsabhimanyu12 · Answer

Look at the last part "is grown by many farmers out West". So the subject has to be "The North American Echinacea flower". This eliminates A, B and C. D doesn't follow a logical pattern as that cannot be used like this. So E

sandysilva · Answer

By subject verb make sense rule.
E is the best option among rest.

Sent from my SM-N9007 using  GMAT Club Forum mobile app

Bunuel · Answer

MANHATTAN REVIEW OFFICIAL EXPLANATION:

To answer this question, you first have to realize that the basic structure of this sentence is fairly simple. The main verb of the sentence is “grown”. What is grown? A flower is grown, not its derivative. Choices A, B, C and D all imply that it is a derivative or a powder which is grown out West and not the flower. This is a clear flaw in logic. The only answer choice that has the correct subject is Choice E.

VerbalBot · Answer

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A powder derived from the North American Echinacea ﬂower, which has be

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GMAT Sentence Correction (SC - EA only) Questions

A powder derived from the North American Echinacea ﬂower, which has be

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