Fact 1: Light enters the eye through an opening called the pupil.

Fact 2: Eyes used for seeing ahead and balance.

Given the two facts above, answer the question "What is light used for?" with the following options: 
- Electrical energy
 - Animal survival
 - noise
 - to move people
 - Seeing ahead
 - hearing
 - Chemical energy
 - listening


 

     Seeing ahead    