You are presented with the quiz "Total permanant loss of sight is the inability to what?" 

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 "loss of sight means the total, permanent loss of sight of the eye". 

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


 

      sense light     