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Bunuel
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aj1410
Hi,

Though I chose right answer, but I want to understand what is wrong in option E.

Is it that we cant use, must in subjunctive mood, or has a mandate is wrong.

Please help with this.

thanks

I believe has a mandate is idiomatically incorrect.
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aj1410
Hi,

Though I chose right answer, but I want to understand what is wrong in option E.

Is it that we cant use, must in subjunctive mood, or has a mandate is wrong.

Please help with this.

thanks

I believe has a mandate is idiomatically incorrect.

Actually not.
"Mandate" is itself a complete verb here. What does Nasa do? Nasa mandates. And, unlike what "has a mandate" suggests, Nasa does not possess a mandate.
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