In a certain region of space, the electric field is zero. From this fact, what can you conclude about the electric potential in this region? (a) It is zero. (b) It does not vary with position. (c) It is positive. (d) It is negative. (e) None of those answers is necessarily true.

It is constant.

Explanation:

As we know that the electric field is a change in the electric potential so,

E = - ΔV

E = 0 ∵ V = constant

As we know that the electric field is zero. Which means that the electric potential is constant and it's not changing which results in the zero electric field.