You are presented with the quiz "What is it called when light allows an image to be focused on the retina?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sight is the ability to sense light, and the eye is the organ that senses light" and "light enters the eye and an image is focused on the retina". 

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


 

       Sight    