Where is the advertisement you are referring to?
Answer: C) At a local barbecue restaurant, they provide each guest with a wet napkin.
A pronoun is the part of speech that replaces a noun. A vague pronoun reference occurs when the antecedent (the noun that the pronoun refers to) is not clear. It is a mistake that can make a narrative confusing or difficult to follow.
In this case, it is not clear who "they" are. It could be the managers, the owners, the servers, etc.
Frankenstein was greatly influenced by Mary Shelley's involvement in the Romantic movement, a school of thought in the nineteenth century that stressed the power of emotion, the beauty of the natural world, and the limitations of rationality. The correct answer is A.