Here are the answers to your questions:
Question 1
A) Which phrase defines an appositive?
Response: a word or group of words that renames a noun
Question 2
A) How is ownership shown for singular nouns?
Response: add -'s to the noun
Question 3
A) Which comma rule is used in the sentence?
Response: compound sentence
Question 4
A) Which sentence revision uses quotation marks correctly?
The completion of the answer appears to be missing, but it should look something like this:
Response: Last week, Brian read “The Fall of the House of Usher.”
(Ensure that the closing quotation mark is also included to correctly complete the sentence.)
Let me know if you need any more help!