Answer:
The answer is: A) <u>The rhyme scheme supports the narrator’s complaint of monotony.</u>
Explanation:
This excerpt is basically explaining a routine; however it doesn't seem as to be enjoying it or being cheerful about it, justyfing this, we can see a modal verb there, "must" which implies obligation; so this is the reasin wht letter B isn't possible. This excerpt isn't humorous as well, adjectives and nouns are used in a simple manner, nothing humorous to see, as well as no emotional outburst for, again, simple words are used, nothing to exaggerate being humorous or emotional, this is why letter C and D aren't correct. On the other hand we have letter A which is basically what a routine is about "monotony".
If you are looking for a sentence in that paragraph to support the main idea, I think it would be "All it requires is a good pair of sneakers-no cables, stylish outfits, or weights required. The main idea is basically that walking is a good and easy way to begin exercising, and that explains it.