In the question, four alternatives are given for the Idiom/Phrase. Choose the alternative which best expresses the meaning of the Idiom/ Phrase and choose the option corresponding to it.
Call on

Options

A. Telephone
B. Seek help
C. Pay a visit
D. Order Directions

Answer

C

Explanation

Call on = to visit someone.
Look at the sentence :
Part of my job was to go out and call on farmers.