It is definitely not B nor D because those two have negative meanings. It can't be C because excessive means "beyond the usual", which has a slightly negative meaning.
The answer should be A, conversational.
A. Interrogative, question mark. "Have you ever been to North Carolina?" is a question, hence the question mark. If one is being interrogated, he or she is being questioned.
I think the answers A -connect its topic to those of other speeches.
III only is the best answer i think
