Which of the phrases given below the sentence should replace the phrase printed in bold type to make it grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.

It is always better to make people realise the importance of discipline than to impose them on it.

A.

impose it with them

B.

impose them with it

C.

imposing them on it

D.

impose it on them

E.

No correction required

Correct answer is D

No explanation has been provided for this answer.