I'll give you a question, please answer with step-by-step reasoning process. She had to finish reading book for school, but it was late and she kept what?
Options:
- fall asleep
- falling asleep
- learning
- sit
- the light on

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
One falls asleep when one tries to wake up at late night.
The answer: falling asleep.