Answer:
D) word choice
Explanation:
Let's look at each answer: A) text format has nothing to do with the tone of a text, so we can eliminate that. C) meter also had nothing to do with the tone of a text, so we can eliminate that as well. B) rhyme scheme could impact the tone, but it is not likely, so that leaves us with D) word choice as the best answer.
Hope this helps :-)