1. Usher invites the narrator for a visit.
2. The narrator encounters the Usher family physician.
3. Usher explains that his sister is dying.
4. Usher and the narrator spend their days reading.
5. Usher and the narrator take the coffin to the vault.
6. Both Usher and the narrator have difficulty sleeping.
7. The house of Usher is destroyed.
I believe you have a typo when it comes to the first option - it should be athletics, not athletic. The word athletic is an adjective, and the word athletics is a noun.
That being said, the correct answer is A. athletics. Even though this noun ends in -s, it is still singular. The rest of the options are all plural nouns.
I believe the answer is C. shabby and poor