Answer: The correct answer is C. :)
Answer: act as a single unified sentence
Explanation: I suspect this is the answer, because usually it would be like a list. And the list wouldn’t usually be separated in different sentences
In this situation, Huck is trying to be impressive. He is trying to get the point across that he is funny and "cool". This lie is not only the one of a kind for Huck, but also one where he tries to push his reputation past its limits.
The anecdote that introduces this topic, is the beginning sentence.
"When adolescence hit Frances Jensen's sons, she often found herself wondering, like all parents of teenagers, "What were you thinking?"