next question: John had a gun but he set it aside. It wasn't helpful. He needed to build a fire. Why did he need a fire?
Options:
- murder
- warm hands
- harm
- warm up
- park
reasoning:

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
Person may need fire to warm up himself. Gun cannot be used to build fire. The answer is warm up.