must be warned of potential.....

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Beat-D-GMAT
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Topic: must be warned of potential.....
PostSat Jul 25, 2009 11:33 am Reply with quote
The federal rules aimed at protecting human subjects of medical experiments were established to ensure that patients must be warned of potential risks and an independent panel would evaluate the experiment before it was conducted.

a. must be warned of potential risks and an independent panel would
b. must be warned of potential risks and that an independent panel
c. are warned of potential risks and that an independent panel
d. will be warned of potential risks and an independent panel would
e. would be warned of potential risks and that an independent panel


Can you help me which one is correct option and what is logic behind answer?

Thanks.
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rahulmehra13
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PostSat Jul 25, 2009 11:34 pm Reply with quote
The answer should be E.

'Would' should be used when a sentence talks about the future in past tense.

|-----------||--------------------------------------------------|||
Past Future(In reference to past) Present

| - Past
|| - Future(In reference to past)
||| - Present

For past if there is some future reference use would.
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