Which of the following phrases (I), (II), and (III) given below each sentence should replace the phrase printed in bold letters to make the sentence grammatically correct? Choose the best option among the five given alternatives that reflect the correct use of phrase in the context of the grammatically correct sentence. If the sentence is correct as it is, mark (e) i.e., “No correction required” as the answer. 

Revolutionary scientists designed varieties of strategies to make the will of the people discernible.
I. a multiple strategies
II. several strategies
III. multitude of strategy

Directions: In question four alternatives are given for the Idiom/Phrase underlined in the sentences. Choose the alternative which best expresses the meaning of the Idiom/Phrase and mark it is the Answer Sheet.

Turn a deaf ear 

In the following question, out of the given four alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.

Jog someone’s memory

Select the correct option of the idiom/phrase.

"A black sheep"

Select the correct option of the idiom/phrase.

"A bolt from the blue"