When I was home, I was comfortable. But I had a crippling fear of going where?
Options:
- outside
- vacation
- idle
- apartment
- neighborhood
Let's think carefully first. Step-by-step reasoning process:

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
Some people are afraid to leave environments they know or consider to be safe in severe cases. A person considers his home to be the only safe environment. So the final answer is outside.