In the sentence identify the segment which contains the grammatical error.
The cost of fruits and vegetables have risen abnormally this month.

Options

A. abnormally
B. The cost of
C. have risen
D. this month

Answer

C

Explanation

Here, verb will be used according to ..The cost (singular)., not according to .fruits and vegetable (plural)..
Hence, has risen …… will be used here.