You are presented with the question "What material will become hot if exposed to a heat source?" and the following answer choices: 
- coal
 - asbestos
 - polystyrene
 - Oak
 - Fiberglass
 - Copper
 - bamboo
 - an object

Now knowing that if a thermal conductor is exposed to a source of heat then that conductor may become hot and copper is a great thermal conductor, choose the best answer.


 

      Copper   