Coulombs Law

The work done in moving a charge in an electric field is given by: where is the charge being moved and is the potential at the point where the charge is located. In this case, the charge is being moved in a circular path around a stationary charge.
Since the stationary charge is fixed, the electric potential around it is constant for any circular path around it.
Therefore, there is no change in potential as the charge moves around the circle. Since the electric potential remains constant, the work done in moving the charge is zero.

The correct option is (C) : zero