( pls hurry. on a test ) In the diagram, the arrow shows the movement of electric charges through a wire connected to a battery. A battery with an arrow at its top running from left to right. A black line connects the right end of the battery to the left end by making a series of straight lines to form a rectangular box with the battery as part of the bottom side.

What causes the electric charges to flow from one end of the battery to the other?

a.) a balance in electric potential

b.) a balance in resistance

c.) a difference in electric potential

d.) difference in resistance