Answer:
A. A middle-class girl living in England during the 1700s
Step-by-step explanation:
Well we can assume she is not from the 21st century because it says "No decent lady would be seen at the wharf" but in the 21st century many people don't go to the wharf and out of those people there may be some women as society today isn't so tough on women anymore. In the West in the 1800s, the west had just been explored by colonists and there probably weren't any wharfs there either. If I were to choose, I would select A. A middle-class girl living in England during the 1700s. If I'm wrong, I'm terribly sorry!