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Doubt in 2 options

Expert replies
by anshulagarwal12 » Tue Jul 24, 2012 2:18 am
Beyond the immediate cash flow crisis that the museum faces, its survival depends on if it can broaden its membership and leave its cramped quarters for a site where it can store and exhibit its more than 12,000
artifacts.
(A) if it can broaden its membership and leave
(B) whether it can broaden its membership and leave
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Source: — Sentence Correction |

by Kasia@EconomistGMAT » Tue Jul 24, 2012 4:47 am
"If" shouldn't be used to introduce an indirect question in the GMAT. "If" can be used only in conditional sentences.
Instead you should use "whether."

e.g.
I don't know whether he is coming. - CORRECT

I don't know if he is coming - INCORRECT
I don't know whether he is coming or not - INCORRECT because it is REDUNDANT
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