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Essential for vs Essential to

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by sanjoy18 » Wed Dec 18, 2013 10:19 pm
Federal government financing is an essential key to the survival of the interstate rail system.
A is an essential key in
B is an essential key for
C is essential for
D is essential to
E is essential
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by theCodeToGMAT » Wed Dec 18, 2013 11:09 pm
{A} - INCORRECT; "essential" & "key" are redundant
{B} - INCORRECT; "essential" & "key" are redundant
{C} - CORRECT
{D} - INCORRECT; something is essential for survival - For example: Oxygen is essential for human being's survival
{E} - INCORRECT; connector is missing
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by Chanakya1 » Thu Dec 19, 2013 5:32 am
While essential 'for' seems correct here, I don't think there's much wrong with essential 'to' either. Really not sure whether to pick C or D. What's the OA?
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by Abhishek009 » Thu Dec 19, 2013 10:31 am
+1 for (C)

Plz post the OA as well as OE...
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