You are presented with the quiz "what is the part of the spectrum that the eye can sense" 

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 is the part of the spectrum that stimulates the eye's retina, resulting in sight". 

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


 

    Light       