Hello, i'm not entirely sure what this question is asking. Please revise or remove it. thank you.
This happens when Ruby becomes disappointed with Tom when the hose leaks and Ruby can no longer dive. The two stop hanging out, and Tom loses her friendship.
The light, then, is the light that her friendship brought to his life. Her friendship is light -- it is happiness and is joy to Tom. When the two friends stop hanging out, the light goes out of the marsh. The author is saying the joy has gone out of Tom's life.
I believe "C" is the correct answer, because Connor's friend reminded Connor that the car's gas gauge is broken, meaning that the car would break down.