You are presented with the question "A rainbow is formed by what of rays?" and the following answer choices: 
- an electron microscope
 - energy of moving objects
 - heat energy
 - Solar energy
 - rain or sun shine
 - separation of colors
 - sun's heat
 - flow of electrons

Now knowing that arainbow is formed by refraction of light by separating light into all different colors and light rays come in through the lens, choose the best answer.


 

      separation of colors   