It was the first time they had met their new niece, it was good to have everybody together at the annual what?
Options:
- brother's house
- family picture book
- family tree
- family reunion
- book Let's think step by step:

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
One can meet their family members at family reunion. Family reunion are annual events. So, the answer is family reunion.