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Though most laypeople do not know the difference between classical and

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Though most laypeople do not know the difference between classical and  [#permalink]

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New post 20 Feb 2017, 03:08
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A
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Question Stats:

78% (01:08) correct 23% (01:29) wrong based on 121 sessions

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Source: McGraw Hill GMAT

Though most laypeople do not know the difference between classical and clinical homeopathy, practitioners assert that clinical homeopathy is directed toward particular organs and tissues, and has contributed more to scientific research.

A. has contributed more to scientific research
B. contributed to more scientific research
C. it contributes more scientific research
D. contribute to most scientific research
E. had more scientific contributions to research

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Re: Though most laypeople do not know the difference between classical and  [#permalink]

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New post 20 Feb 2017, 07:40
SajjadAhmad wrote:
Though most laypeople do not know the difference between classical and clinical homeopathy, practitioners assert that clinical homeopathy is directed toward particular organs and tissues, and has contributed more to scientific research.

A. has contributed more to scientific research
B. contributed to more scientific research
C. it contributes more scientific research
D. contribute to most scientific research
E. had more scientific contributions to research


We use the Present Perfect to talk about change that has happened over a period of time, hence the original sentence is correct ( No issues with the original Sentence ), errors in the other sentence highlighted in RED.
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Re: Though most laypeople do not know the difference between classical and  [#permalink]

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New post 21 Feb 2017, 00:17
can anybody explain why A is correct rather than B ?
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Re: Though most laypeople do not know the difference between classical and  [#permalink]

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New post 21 Feb 2017, 23:29
First part of assertion is in present tense, so the second part should also be in present tense

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Re: Though most laypeople do not know the difference between classical and  [#permalink]

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New post 23 Feb 2017, 08:01
as before "and", there is comma so later clause should be independent. I preferred choice C for the same reason because correct grammar comes before sentence meaning. Please help how can A be correct choice.
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Re: Though most laypeople do not know the difference between classical and  [#permalink]

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New post 23 Feb 2017, 10:59
AR15J wrote:
as before "and", there is comma so later clause should be independent. I preferred choice C for the same reason because correct grammar comes before sentence meaning. Please help how can A be correct choice.


Valid point - the comma before "and" should not have been there.
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Though most laypeople do not know the difference between classical and  [#permalink]

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New post 23 Feb 2017, 12:07
If comma before "and" is there, then choice C should be correct?
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Re: Though most laypeople do not know the difference between classical and  [#permalink]

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New post 25 Feb 2017, 12:35
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AR15J wrote:
If comma before "and" is there, then choice C should be correct?


Grammatically yes, but option C does not make sense. The object that clinical homeopathy contributes is not scientific research. Clinical homeopathy contributes (something) TO scientific research. The preposition "to" is required before "scientific research" - this is more serious than missing the comma. So A is less wrong than C.
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Re: Though most laypeople do not know the difference between classical and  [#permalink]

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New post 02 May 2017, 14:27
SajjadAhmad wrote:
Source: McGraw Hill GMAT

Though most laypeople do not know the difference between classical and clinical homeopathy, practitioners assert that clinical homeopathy is directed toward particular organs and tissues, and has contributed more to scientific research.

A. has contributed more to scientific research
B. contributed to more scientific research
C. it contributes more scientific research
D. contribute to most scientific research
E. had more scientific contributions to research


first of all - contributed more vs. contributed to more - the latter has a different meaning.
B is out.
in C - we have a pronoun ambiguity issue - are w talking about clinical homeopathy or classical one? Moreover, clinical homeopathy contributed in the past, and still contributes, therefore present perfect is more appropriate.
D - verb in plural form + MOST - out right away.
E - had - incorrect tense.

A stands
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Re: Though most laypeople do not know the difference between classical and &nbs [#permalink] 02 May 2017, 14:27
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