The answer to this question would be METHAPHOR.
Plagiarism is taking another persons work and taking credit for it as if it were yours.
The difference between free verse and black verse is free verse has no rhythm. Free verse flows naturally, I guess you can say. It doesn't rhyme. It's kinda like as song. Most songs don't rhyme unless it's rap. So, songs are categorized as free verse while rap is categorized as, well, a rhyme that rhymes.
The comma is after a kind of letter like Yes or No a sentence, so the answer would be B. Believe it or not Joe, it is for us to leave.