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Stomach Ulcers

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by komal » Thu Feb 11, 2010 4:50 am
Recently physicians have determined that stomach ulcers are not caused by stress, alcohol. or rich foods, but a bacterium that dwells in the mucous lining of the stomach.

(A) not caused by stress, alcohol, or rich foods, but

(8) not caused by stress, alcohol, or rich foods, but are by

(C) caused not by stress, alcohol, or rich foods, but by

(D) caused not by stress, alcohol, and rich foods, but

(E) caused not by stress, alcohol, and rich foods, but are by

OA C
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by sumanr84 » Thu Feb 11, 2010 4:56 am
Q is testing Idiom and ||ism

Not by X but by Y, where X and Y should be ||el structure.

C is clear winner
I am on a break !!
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by sars72 » Thu Feb 11, 2010 4:57 am
for parallelism rule to be maintained, "not..by" should be coupled with "but.. by"
(A) not caused by stress, alcohol, or rich foods, but
parallelism error
(8) not caused by stress, alcohol, or rich foods, but are by
parallelism error.. presence of "are"
(C) caused not by stress, alcohol, or rich foods, but by
seems ok
(D) caused not by stress, alcohol, and rich foods, but
and is wrong. the items in the list should be seperated by or becuase they are independent.
(E) caused not by stress, alcohol, and rich foods, but are by
same as D

--> Correct Answer is C
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by mgmt_gmat » Thu Feb 11, 2010 4:57 am
Nt X but Y .. is the correct idiom here.

not by ... but by.. is correct here.

are caused ( not by..... but by)

Hence but are by is wrong here.
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by AsadAbu » Fri Sep 09, 2016 7:32 am
komal wrote: Recently physicians have determined that stomach ulcers are not caused by stress, alcohol. or rich foods, but a bacterium that dwells in the mucous lining of the stomach.

(A) not caused by stress, alcohol, or rich foods, but

(8) not caused by stress, alcohol, or rich foods, but are by

(C) caused not by stress, alcohol, or rich foods, but by

(D) caused not by stress, alcohol, and rich foods, but

(E) caused not by stress, alcohol, and rich foods, but are by
The question is totally Parallelism issue. Here the correct answer is C. But, my question is: WHY not B. B makes parallelism to me!
B. NOT (tag)+CAUSED (verb)+by+something....................BUT (tag)+ARE (verb)+by+Something
Indicate parallelism to each other.
Thanks...
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