Directions : In the following questions, some parts of the sentences have errors and some are correct. Find out which part of a sentences has an error. The number of that part is the answer. If a sentence is free error, your answer is No error.
Who do you think I met ?

Options

A. Who
B. No error
C. do you think
D. I met?

Answer

A

Explanation

whom is used instead of who as the object of a verb or preposition.
Look at the examples given below :
Whom did they invite?
To whom should I write ?
Here, whom is the right usage.