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by santoshs » Wed Feb 23, 2011 4:53 am
Research during the past several decades on the nature of language and the processes that produce and make it understandable has revealed great complexity instead of underlying simplicity.

(A) that produce and make it understandable has revealed great complexity instead of underlying simplicity
(B) of producing and understanding it have revealed not underlying simplicity but great complexity
(C) by which it is produced and understood has revealed not underlying simplicity but great complexity
(D) by which it is produced and understood have revealed great complexity rather than underlying simplicity
(E) by which one produces and understands it have revealed great complexity instead of underlying simplicity

Official Answer: After discussion
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by pesfunk » Wed Feb 23, 2011 8:24 am
OA : A

https://gmatclub.com/forum/several-decad ... 85585.html
santoshs wrote:Research during the past several decades on the nature of language and the processes that produce and make it understandable has revealed great complexity instead of underlying simplicity.

(A) that produce and make it understandable has revealed great complexity instead of underlying simplicity
(B) of producing and understanding it have revealed not underlying simplicity but great complexity
(C) by which it is produced and understood has revealed not underlying simplicity but great complexity
(D) by which it is produced and understood have revealed great complexity rather than underlying simplicity
(E) by which one produces and understands it have revealed great complexity instead of underlying simplicity

Official Answer: After discussion
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by ram2 » Wed Feb 23, 2011 10:56 am
I agree with A.
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by tetura84 » Thu Feb 24, 2011 11:05 am
Here, subject = Research
Hence, B, D, E out (have revealed)

Between A & C,
not ... but is not applicable here.
Also, I think the correct idiom is, not ... but rather ...

Also, instead of is correct in option A [instead of (complex preposition) is followed by noun]
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by Target2009 » Thu Feb 24, 2011 2:00 pm
+1 A
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by Jim@Grockit » Mon Feb 28, 2011 8:30 am
santoshs wrote:Research during the past several decades on the nature of language and the processes that produce and make it understandable has revealed great complexity instead of underlying simplicity.

(A) that produce and make it understandable has revealed great complexity instead of underlying simplicity
(B) of producing and understanding it have revealed not underlying simplicity but great complexity
(C) by which it is produced and understood has revealed not underlying simplicity but great complexity
(D) by which it is produced and understood have revealed great complexity rather than underlying simplicity
(E) by which one produces and understands it have revealed great complexity instead of underlying simplicity

Official Answer: After discussion
I don't know why they made this one the way they did. It appears A is the OA, but honestly I think C is actually more correct because of the poor parallelism in A (that produce and make it understandable). Produce is almost always a transitive verb and therefore expects a direct object (produce it); had the pair of verbs been produce and make it, we would understand produce it and make it, which is redundant but otherwise parallel. Instead we have produce it and make it understandable, where we might understand produce it understandable and make it understandable, the first part of which is nonsense. The two verbs have dissimilar syntax.

So, my answer is: :(
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