I would say letter A. This is because it explains how the brain can’t perform two complex tasks at the same time, such as texting and driving.
the poem is about 2 people who go into an argument and rearrange
1) sentence
2) fragment
3) sentence
4) sentence
5) fragment
6)fragment
7) fragment
8) sentence
9) fragment
10) sentence
11) sentence
12 ) sentence
13) sentence
14) sentence
15) sentence
16) sentence
17) sentence
18) sentence
19) sentence
20) sentence
To be honest, I think it might possibly be the third option. I hope this helps.