Choices: 1. Cloth material 2. Minerals 3. Spongy material 4. prevent heat loss 5. Something that comes in a bundle of fibers 6. Material carrying electricity 7. animals with backbones 8. Time and energy

Fact 1: Wiring requires an electrical conductor. Fact 2: Conductor A conductor is any material that carries electricity. Given the two facts above, what does wiring require?
Answer:
6.