In the following questions, four alternatives are given for the idiom/ phrase printed in bold in the sentence. Choose the alternative which best expresses the meaning of the idiom/phrase as your answer.
His investments helped him make a killing in the stock market.

Options

A. lose money quickly
B. plan a murder quickly
C. murder someone quickly
D. make money quickly

Answer

D

Explanation

Idiom make a killing means : to make a lot of money quickly.