In the following question, four alternatives are given for the idiom/phrase in bold and italics in the sentence. Choose the alternative which best expresses the meaning of idiom/phrase.

Harassed by repeated acts of injustice, he decided to put his foot down.

A.

not to yield

B.

resign

C.

to accept the proposal unconditionally

D.

withdraw

Correct answer is A

No explanation has been provided for this answer.