Joe has two caregivers. One is his mother. What might the other be?
Options:
- adult
- grown up
- parent
- grandmother
- father
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
Father can be a caregiver. Children have a father. Father is related to the child. The answer: father.