C, the predicate adjective is used to describe the subject, in the predicate.
Every sister's point of view is different. An older sister might think maturely while a younger sibling might think more naive or immaturely.
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
