We learned to associate darkness with fear and the unknown, and we learned to suppress our negative thoughts and feelings. Turning on the light on our emotional shadow is far more difficult than turning on a physical light switch. As a result, we don't go near it. It's more convenient to be superficial. But, whether we like it or not, the darkness in our hearts has a life of its own. It's there, and it's a formidable opponent.
Answer: Romeo describes her as light because he has new found love within her that he feels brought him out of the darkness and into a whole new world of emotions and feelings.
C because that person is looked up to by many people. They are wise and give good advice. So most likely many people would accept their recommendation. <span />