I'll give you a question, please answer with step-by-step reasoning process. The people had destroyed his family, he was now killing people with what?
Options:
- joy
- laughter
- vengeance
- terrible
- anguish

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
Vengeance means punishment inflicted or retribution exacted for an injury or wrong. The people had destroyed his family; he was now killing people with vengeance.
The answer: vengeance.