Jem wants to make sure that Atticus can't hear his disrespect. Jem wants to preserve his perfect relationship with his father.
The answer is B: The rebels will not be able to hurt Arthur
From the excerpt of "Dover Beach" by Matthew Arnold, the line "...on the French coast, the light/Gleams and is gone..." obviously symbolizes the impermanence of life. The light on the French coast is like an opportunity presented to us, once. We must be ready once this opportunity comes.
