Fact 1: When light enters the eye through the pupil , that light falls on the retina.

Fact 2: Light is made of photons .

Given the two facts above, answer the question "What enters the eye through the pupil and. falls on the retina to make an image?" with the following options: 
- photons
 - epidermal
 - sun's heat
 - our star
 - energy
 - an object
 - sunlight
 - movement


 

 photons        