Answer:
C. loose rhyme scheme and structure.
Explanation:
Answer: D
The answer is D because the information following "message" is the message. A colon is appropriate (as used in D) when the information after the colon describes or represents the word or phrase that comes before the colon.
Okay, so this is a little hard to answer when you do not have the excerpts, but I will try my best to work a answer out of the headings. I think your answer would be C. It makes sense, the info that comes after the titles, so If I were you I would go with C.
I hope that helps.