Answer: Early in the play, as he moans about his unrequited love for Rosaline, Romeo uses a simile to compare love to a smoke that arises from the sighs of lovers, perhaps suggesting that it is simultaneously beautiful, potentially suffocating, and difficult to hold onto.
I think the answer is either A. Why does Harry seem sad at the end of the passage. or D. Where will jack and Harry find work after the professor leaves?
The central idea is the same as the main idea. Most of the time, the main idea is mentioned in the Title. Without reading the essay, I do not know what the central/main idea is.