are conductors of electricity make complete electric circuits are not conductors of electricity make the electricity move quickly
I gave my students this multiple choice question: Most electrical wires are covered with plastic or rubber. The wires are covered with plastic or rubber because those materials

Only one answer is correct among these 4 choices:
- are conductors of electricity
- make complete electric circuits
- are not conductors of electricity
- make the electricity move quickly

Could you tell me which one is correct?

are not conductors of electricity