Question

Two charged objects, A and B, exert an electric force on each other. What happens if the distance between them is increased? a) the charge on B decreases b) the charge on B increases c) the electric force between them decreases d) the electric force between them increses

Answer 1

The electric force between the charged particles is given by Columb's law. It says that the electric force between two charged particles is inversely proportional to the square of the distance between their centers.
Thus, when you increase the distance between them, electric force between them decreases. 

Answer 2

the electric force between them decreases