Answer:
A. "In one coach there sat a very pretty young woman dressed in elegant taste and surrounded by all the luxurious comforts of an experienced traveler." (first paragraph)
Explanation:
The sentence that supports the idea that Miss Fairchild's elegant appearance masks her internal conflict is option A.
This is because it is narrated that in one coach she was witted, looking elegantly dressed and surrounded by the comforts of an experienced traveller which superbly covers the internal conflict she had to the outside world.