What was the hardest thing for her to do while learning to ski?
Options:
- slip on ice
- fall down
- fall over
- sweat
- maintain balance
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
A person needs to maintain balance while doing ski. While learning to ski, the hardest thing for her is to maintain balance.
So, the final answer is maintain balance.