If I will play my best I can win any day against anybody.

Options

A. against anybody
B. I can win any day
C. No error
D. If I will play my best

Answer

D

Explanation

As the structure and sense suggest, in the conditional clause, Present Simple i.e., If I play my best is the right usage. The structure is as follows:
If + Pr.T. `rarr` will/can + Inf. (PI.T.)