Answer : Electric field is given by, E = 50 N/C in right.
Explanation :
It is given that,
Charge, q = 0.08 C (moves to the right)
Force exerted by the electric field, F = 4 N
We know that the electric field is defined as :



The direction of field is same as the direction of electric force i.e.
in right direction.
So, the correct option is (D).