Question

What two things must exist for an electric current to be produced?A pair of highly conductive materials and a conducting path between themA source of voltage and an open circuitA negatively charged electrode and a positively charged electrodeAn electric potential between two bodies and a conducting path joining the bodies

Answer 1

The two things that must exist for an electric current to be produced are:

An electric potential between two bodies and a conducting path joining the bodies.

This comes from the fact that when there is a potential difference there is an electrical field and hence a force that makes some free charges to move in the conductor. For this reason, there's an electrical current.