I believe the answer is D, it makes the most sense to me. But you have my apologies if it is incorrect.
D is the only one that seems to suggest that the dagger in only in Macbeth's head. "Or art though but A dagger of the mind", it questions if the knife is actually there or not.
The first sentence is normally the "grabber". Then the rest of the fist paragraph should include background knowledge of the topic and your thesis.
Answer:
Genre of Oysters
Explanation:
The genre or theme of the book oysters by Anton Checkhov is fiction
Theres not enough information to answer
I believe the answer is a, although a lot of them work!