No, I don't think it is a rhetorical device
Answer:
When you start to enjoy being alone, you'll quickly see that solitude means you don't have to keep apologizing for what you've done. So often, we do things that end up upsetting other people, or hurting someone else's feelings, and then have to quickly apologize for it.
I think the answer would be parallelism.
Answer:
A noun clause is a type of dependent clause that acts as a noun in the sentence.
An adverbial clause is a type of dependent clause that acts as an adverb in the sentence.
An dependent clause relies on the information from an independent clause to form a complete, logical thought.
An independent clause can stand alone in a sentence.