1. A? | 2. C.
I'm slighty unsure about both answers but they make the most sense to me.
I know that Nat Turners rebellion caused new laws to be passed, although they were not to prevent freeing slaves, they were to prevent uprisings. I know one of the new laws passed had to do with slaves no longer being able to be educated in reading and writing. If this is not the answer although, B might be your answer.
For naturalization, that'd be C I believe. The process of living and working in the USA is using a green card for about 5 years, and then you apply for naturalization, which is the steps taken for someone not native to become a US citizen. B, the act of taking an Oath is part of naturalization, it is not the whole thing.
I may or may not be wrong, so take your time and think about the answer. I really am not sure myself.