C. helps to emphasize important points
In my opinion, the correct answer is <span>B: "He asked himself where it had come from and how; the past provided no explanation, and the future could not justify it." This is the only instance when the main character tries to discover the source or roots of his happiness and infers that it hasn't resulted from any action from the past, nor from anything that might yet happen. The other options present this happiness as something that is almost a burden to him, and that's why they are examples of dark humor.</span>
Writing about being bullied is perfectly appropriate, so long as it approached in the correct manner. If you choose to use this as your topic, you should start by describing a particularly bad time you were bullied. Use dialogue, showing not telling, and imagery. You want this scene to be your attention getter, so make the bullies sound as mean and threatening as possible, and make sure to make it clear how you were feeling at the time.
The legislative branch creates the laws. The executive branch executes the laws. The Judicial branch explains the laws.