You are presented with the quiz "What happens when light hits water?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "arainbow is formed by refraction of light by separating light into all different colors" and "rainbows have colors because water refracts different wavelengths of light slightly differently". 

So, what's the best answer to the question?


 

     Rainbows are formed      