Not X but Y - frequenty discussed

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Not X but Y - frequenty discussed

by GMATMadeEasy » Tue Feb 08, 2011 2:38 am
Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments.

(A) due to their enhancement of reproduction or survival, but that they are
(B) due to the reproduction or survival they enhance, but they are
(C) because they enhance reproduction or survival, but
(D) because they enhance reproduction or survival, but are
(E) because of enhancing reproduction or survival, but are

need expert help please to reach to a solid conclusion for not X but Y, not X but are y game.
Source: — Sentence Correction |

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by aspirant2011 » Tue Feb 08, 2011 3:19 am
I am confused between D & E but would have gone for D.........it should be "are not x but are y" in order to maintain parallelism............

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by prachich1987 » Tue Feb 08, 2011 4:37 am
Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments.

IMO : only C fits here
There is no need to use ARE again

Please post OA along with the source.
Thanks!
Prachi

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by rohu27 » Tue Feb 08, 2011 5:48 am

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