dj_vinayak wrote:833). The Supreme Court's concern with legitimacy is not for the sake of the court but the nation to which it is responsible.
(A) but the nation to which it is responsible

(B) but for the sake of the nation to which it is responsible

(C) so much as the nation it is responsible to

(D) as the nation it is responsible to

(E) but the nation

OA is b

I have a query which I think would be best to ask after a reply

In order to maintain parallelism here, B is the best choice; it compares "for the sake of the Court" to "for the sake of the nation to which it is responsible." That second "for" is important, and B is the only choice that has it. B also uses the correct idiom: "not X but Y." While B is the longest choice, and conciseness is important on the GMAT, the most important thing is for an answer to display correct grammar.

grockit_andrea wrote:
In order to maintain parallelism here, B is the best choice; it compares "for the sake of the Court" to "for the sake of the nation to which it is responsible." That second "for" is important, and B is the only choice that has it. B also uses the correct idiom: "not X but Y." While B is the longest choice, and conciseness is important on the GMAT, the most important thing is for an answer to display correct grammar.

Gr8.Thanks.
Now my question

Why not A?It cannot be the pronoun reference because "it" is being used in both A and B.

A also use ...NOT ...BUT...idiom

Is not "not for....but for..." nothing but an extension of the above idiom?

A is more concise,which I guess you realized too.

Vinayak,

A is wrong

idiom : not X but Y : where X and Y must be parallel.

X -> for the sake of the court
Y -> the nation to which it is responsible

obviously are not parallel.

paes wrote:Vinayak,

A is wrong

idiom : not X but Y : where X and Y must be parallel.

X -> for the sake of the court
Y -> the nation to which it is responsible

obviously are not parallel.

Ok.I think I get it.This would be logical parallelism.