I believe the best answer is the first sentence because that is where the action seems to occur.
Answer: The way the reader knew that the flower girl was intelligent is that:
A) She is smart enough to know what things cost and how a gentleman should treat a guest.
Explanation: The dialect of the flower girl is not a criteria for intelligence but since she could effectively know the cost of things and how a gentleman should treat a guest, she could be attributed as an intelligent person.
<span>B. The citizens did not identify themselves by their ethnicity as did the rest of the country.</span>
The second answer. Im 95% sure.