Fact 1: If an object is black then that object absorbs all visible light.

Fact 2: Light seems to travel in rays or beams.

Given the two facts above, answer the question "black objects absorb all visible what?" with the following options: 
- sunlight
 - microwaves
 - Energy.
 - black holes
 - dark matter
 - rays or beams
 - activation energy
 - heat energy


 

      rays or beams   