Accelerate is the process of speeding up gradually. Airplane speeds up gradually before taking off.is the reasoning for what question and answer pair?

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.
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Q: What does an airplane do before takeoff?
Options:
- crash
- accelerate
- turn around
- catch on fire
- carry freight
A: accelerate