Heyyy can some help me srry I keep posting questions.

What does the bright light symbolize in this passage?

She knocked on the door. When no one answered, she lit a candle, opened the door, and walked into the room. Her grumpy brother was sitting in a corner of the darkened room. He was consumed by his anger and hate. She stayed in the room despite his foul mood. Then, slowly but surely, his mood improved. They spoke for hours after he opened up to her. A while later, he realized how well his room was lit. Despite its tiny flame, the candle had pushed out the darkness, just as his sister had managed to drive out the darkness in him.

A .loneliness
B .kindness
C. conscience
D .anger