Water causes refraction of light, and rainbows are formed when sunlight is refracted through raindrops. Given these facts, how are rainbows formed among the following options:
- photosynthesis
 - Light passing through water
 - Cold air mixing with water
 - Hot air passing through water
 - Evaporation of water
 - focusing a lens
 - photosyntehsis
 - Water passing through light


 

  Light passing through water       