I would say the best would be looking at content and the expected length and/or organization
Because alliteration is when the same sound (not necessarily the same letter) occurs at the beginning of a word or words that closely follow each other in the same sentence or poem line, we can see that with a "W" sound, the second line contains alliteration with the words "wanders," "watches," and "with." And, the fourth line contains alliteration with the "M" sound with the words "muster" and "men."
Answer:
If you (stay out) in the rain (too long) you get sick
Explanation: This just sounds better to me. I don't know if you need to figure out what words to emphasize but there's my answer