You are presented with the quiz "What use their eyes to sense light so they can see?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "eyes are used for seeing by animals by sensing light" and "bobcats eat a variety of animals, including mice and voles, squirrels, rabbits and deer". 

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


 

     voles      