You are presented with the question "what enters the eye through the pupil and falls on the retina?" and the following answer choices: 
- an electron microscope
 - rain or sun shine
 - iris
 - rods and cones
 - an electron lens
 - Chemical energy
 - intermediate length rays
 - hydrogen

Now knowing that when light enters the eye through the pupil , that light falls on the retina and intermediate length rays are visible as light, choose the best answer.


 

       intermediate length rays  