From the lettered A to E below the sentence, choose the word or group of words that is nearest in meaning to the underlined expression as it is used in the ...

From the lettered A to E below the sentence, choose the word or group of words that is nearest in meaning to the underlined expression as it is used in the sentence.
The principal's order are imperative

Answer Details

The word "imperative" as used in the sentence means "absolutely necessary or crucial". Therefore, the option that is nearest in meaning to "imperative" is "necessary".