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

Fact 2: Copper is a great thermal conductor.

Given the two facts above, answer the question "What can easily become hot if exposed to heat?" with the following options: 
- an object
 - engines
 - vehicles
 - animals
 - the skin
 - clams
 - copper
 - Mammal


 

       copper  