Creatively image a question and justification for this answer: discover truth

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
The question is: The police had been stumped for years, the grieving family hired a private investigator in a hope to what?
Options:
- notice physical evidence
- arrest criminal
- gather evidence
- discover truth
- gathering facts
Step-by-step reasoning process: Discover truth means a wish to know the fact or reality. The police had been stumped for years; the grieving family hired a private investigator in a hope to discover truth.
