Answer: I would contend that the right answer is actually the B) Dialect.
Explanation: Just to elaborate a little bit on the answer, it can be added that, in this passage, the character of the runaway slave Jim, Huck's close friend and caretaker during their escape across the river, is explaining to Huck, in his own characteristic, yet perfectly decipherable for Huck (who translates his words for us), dialect, what he did with ten cents that he had made after having sold the hide and the tail of a cow. Another person invested the money for him, but it did not bring him any profit, so he is "not going to lend any more money" until he is certain that it's safe to do so. A priest had told that person that if he gave the ten cents to the poor he would get a hundred times over, and Jim is here questioning that statement. He concludes by saying that if he could get his ten cents back he could call them even and would be happy.
The use of dialects was a distinguishing feature of realism and regionalism in American literature, as it is exemplary illustrated throughout Mark Twain's The Adventures of Huckleberry Finn. By using dialect so masterfully, Twain was able to invite the reader to literally take a seat next to Huck Finn, and experience the region and its people the way he was experiencing it during his adventure across the Mississippi River.