To establish the purpose and point of view.
The excerpt from The Adventures of Huckleberry Finn because it emulates the cliche of running away as a teenager and discovering who you are, which is a realistic thing to do when a character like Huckleberry Finn struggles with his kind of background. The other excerpts revolve around unrealistic impressions of its characters.
Answer: Cassie will never understand what Paul is going through.
Explanation: She just keeps talking but not understanding.
Answer: It is a passive voice
Explanation: