Direction: In these questions, sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four alternatives.
I am exhausted, let's _____ a day.

Options

A. 1) call It
B. 2) call at
C. 3) call off
D. 4) call in

Answer

A

Explanation

call it a day (Idiom) : to decide or agree to stop doing something.
Here, call it is the right usage.