Answer: The answer is D.
Explanation: It is because when the writer uses the word "for example". It usually means that they are going to give an example related to the idea that they were talking about.
I believe its D. Conclusion as the narrator finally comes to a conclusion of what they have realised.
Answer:
I would go with <u>Option B</u>, it sounds the most appropriate, I'm not 100% sure, I could be wrong.
Explanation:
I think you mean nullification. It was the idea that individual states could nullify federal laws if they felt like it.