Directions : In the following questions, some parts of the sentences have errors and some are correct. Find out which part of a sentence has an error. The number of that part is the answer. If a sentence is free from errors, your answer is (4) i.e. No error.
I do not know who you consider to be the best dancer.

Options

A. I do not know
B. who you consider
C. to be the best dancer
D. No error

Answer

C

Explanation

Here, the best dancer is the right usage. Use of to be is unnecessary