Typical slave owners were Confederates, meaning that they were against a federal government and preferred state governments instead. So this eliminates option 2 and option 3. I'm really torn between the first and last options, and of them, I'd probably say that it's option D. You might want to check the lesson though.
Answer: D. States should be free to make their own laws, like individual countries, and should rely on the federal government only for common issues like trade and defense. I hope this helps
