Fact 1: If a thermal conductor is exposed to a source of heat then that conductor may become hot.

Fact 2: Metals are also known as being good conductors of heat, or thermal conductors.

Given the two facts above, answer the question "what conductor may become hot if exposed to heat?" with the following options: 
- copper
 - metal
 - LEDs
 - gas
 - rubber
 - coal
 - oxygen
 - Oak


 

  metal       