What do airplanes do?
Options:
- carry freight
- catch on fire
- stall
- in the clouds
- accelerate
Let's think now! Step-by-step 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
Airplanes are aerial vehicles that carry people or freight.
So, the final answer is carry freight.