Fact 1: Absorbing energy causes objects to heat.

Fact 2: Metal expands when heated.

Given the two facts above, answer the question "What happens when metal absorbs energy?" with the following options: 
- Energy.
 - Relieve pain
 - kinetic energy
 - It expands
 - Light
 - electricity
 - boiling
 - Evaporation


 

    It expands     