Select the most appropriate word to fill in the blank
The student has made a ______ to the police about a false video of her that is being circulated by some miscreants.

Options

A. complaint
B. complain
C. complainant
D. complaining

Explanation

Complaint is a noun while complain is a verb. According to the meaning of the sentence, a noun is needed. So, option (a) is fit to the context.