What is required for an electric charge to flow through a wire?
a) zero resistance in the wire
b) a balance of electric potential
c) high resistance in the wire
d) a difference in electric potential

In order to persuade the electrons in the wire to flow, you need
a potential difference between the ends of the wire.  Then the
electrons will want to get away from the more-negative end and
go to the more-positive end.  If both ends of the wire are at the
same potential, then the electrons have no reason to go anywhere,
and they just stay where they are.

Choice-d says this.

To use anything transparent