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

Fact 2: Black holes emit no light.

Given the two facts above, answer the question "what are not visible?" with the following options: 
- kalenchoes
 - sun
 - liver cancer
 - black hole
 - sea squirts
 - layers of fat
 - stars
 - ocean


 

    black hole     