increasing the current in the circuit placing rubber insulation on wires in the circuit reversing the direction of current flow in the circuit using circuit wires with a lower resistance
I gave my students this multiple choice question: A hardware designer finds that the wiring in a circuit is releasing enough heat to make the circuit dangerously hot. Which change would best solve this problem?

Only one answer is correct among these 4 choices:
- increasing the current in the circuit
- placing rubber insulation on wires in the circuit
- reversing the direction of current flow in the circuit
- using circuit wires with a lower resistance

Could you tell me which one is correct?

using circuit wires with a lower resistance