Q: Which of these sentences doesn't make sense?
Options:
- Sentence A: "The big tree is used to keep out the rain."
- Sentence B: "Umbrellas are used to keep out the rain."

Let's solve this gradually.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
It's not safe to stand under a tree in the rain. The answer is Sentence A.