In this question, sentence is given with blank to be filled in with an appropriate word. Four alternatives are suggested for question. Choose the correct alternative out of the four.
He ___ his mistake

Options

A. 1) understood
B. 2) solved
C. 3) finished
D. 4) realised

Answer

D

Explanation

realise (V) : to understand or become aware of a particular fact or situation.
Look at the sentence :
Only later did she realise her mistake. Here, realised is the right usage.