I think it's B because it talks about punishment
I know that this isn't what you're looking for, but the answer is not B. The rebellion brought about a decline in race-based slavery. I know because I took the quiz.
Adam Smith advocated a capitalist economy in which people could freely pursue their own self-interest with government repression. But, in pursuit of self-interest led to oppression and greed, that's when the government should intervene with their invisible hand. Smith was truly an economic genius.
Does this help? :)