<span>The writing is choppy.
I believe this is the answer. If the writing was connected, sentences would already be combined. Varied writing and lengthy writing usually has nothing to do with sentence combination.</span>
The correct answer is The page number only
Since you've already mentioned who the author is, you don't have to mention him again. The book title would only be added if you're using multiple sources from the same author. If only one, then the page number only.
Answer:
When Emily's father passed away, she wouldn't admit he was dead. It took three days for her to allow people to remove his body from their home. ... Thus, the death of her father and the revelation of her poverty marked the point at which the townspeople began to feel sorry for Miss Emily.