Fact 1: Arainbow is formed by refraction of light by separating light into all different colors.

Fact 2: Rainbows form when raindrops refract sunlight.

Given the two facts above, answer the question "what causes rainbows?" with the following options: 
- mutations
 - sunlight
 - earthquake
 - magma
 - wind
 - light
 - Condensation
 - flowers


 

  sunlight       