Fact 1: Electrical current running through a wire causes that wire to heat up. Fact 2: Too much heating of the wire creates a fire hazard. Given the two facts above, electrical current running through a wire can cause a what?

OPT:
1). fire hazard.
2). similar.
3). rays or beams.
4). energy barrier.
5). energy.
6). warmth.
7). kinetic energy.
8). Temperature.
Answer:
1).