For the first question, the correct answer is: Pap believes that, by going to school, Huck is trying to prove he is better than his father.
Indeed, being the illiterate, violent, abusive town’s drunk; Huck’s father is envious of his education and feels inferior to the son he has battered and brutalized for so long. Huck’s ability to read and write is the one thing that escapes his brutal power over his son. This is proved by the following dialogue:
“Well, I'll learn her how to meddle. And looky here—you drop that school, you hear? I'll learn people to bring up a boy to put on airs over his own father and let on to be better'n what HE is.”
For the second question, the correct answer is: Twain is satirizing superstitious beliefs, and pointing out the flaw in relying too heavily on superstition.
Indeed, Twain is using superstition to kind of foreshadow pap’s arrival. He also used Jim’s superstitions to show the cultural porosity between African animistic beliefs and European American ones. However, when Twain draws a parallel between Huck’s superstition and the Christian religion he is clearly showing that none of them “but that warn’t going to keep off the bad luck”.
