Question

"It's so. You can do it. I had my doubts when you told me. Now looky here; you stop that putting on frills. I won't have it. I'll lay for you, my smarty; and if I catch you about that school I'll tan you good. First you know you'll get religion, too. I never see such a son." What do these words by Huck’s father reveal about his character?
He wants Huck to have a better life than he himself had.
He does not believe that Huck will succeed academically.
He believes that education will make Huck feel superior.
He feels that religion is the only subject worthy of study.

Answer 1

I believe the answer is D: "He feels that religion is the only subject worthy of study".
It's not B because in the beginning Huck's father says, "It's so. You can do it." It's not C because he says, "If I catch you about that school I'll tan you good," which I believe has a negative meaning.

Answer 2

He feels that religion is the only subject worthy of study.
In the sentence, "First you know you'll get religion, too," it is saying that he thinks it is the only religion he actually be able to understand.