The person had always assumed, but discovering the truth came as a what?
Options:
- hurt
- satisfaction
- understanding
- joy
- shock
Step-by-step reasoning process below:

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
Shock is a sudden upsetting or surprising event or experience. The person had always assumed, but discovering the truth came as a shock. The answer: shock.