You are presented with the quiz "What part of the eye perceives light when light enters through the pupil?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "when light enters the eye through the pupil , that light falls on the retina" and "receptors are cells in the retina that perceive light". 

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


 

     receptors      