Sentence Correction - Verbal and Reasoning

Directions to SolveWhich of phrases given below each sentence should replace the phrase printed inboldtype to make the grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.
Q1:

He hesitated to listen to what his brother was saying.

A listened to hesitate

B hesitated listen to

C hesitates to listening

D is hesitated to listen to

E No correction required

ANS:E - No correction required

No answer description is available.