Explanation: To understand the relationship between V and D, we need to carefully analyze the family tree provided in the question. Let's break down the relationships step by step:
1. **J is the brother of K.**
- This means J and K are siblings.
2. **K is the mother of Z.**
- K is a parent, and Z is her child.
3. **Z is the sister of R.**
- Z and R are siblings, with K being their mother.
4. **R is married to M.**
- R and M are a married couple.
5. **P is the father of K.**
- P is K's parent, making P the father of J as well since J and K are siblings.
6. **P has only one daughter.**
- This confirms that K is the only daughter of P, and J is the only son.
7. **P is married to T.**
- T is the mother of J and K.
8. **J is the brother of V.**
- J and V are siblings, making V the son of P and T.
9. **U is the father-in-law of V.**
- This means V is married to U's daughter.
10. **If U is the father of D, then how is V related to D?**
- Since U is the father of D and U is also the father-in-law of V, D must be V's spouse. Therefore, V is the husband of D.
By carefully tracing the relationships and understanding the roles of each individual in the family tree, we can conclude that V is the husband of D. This is the correct relationship based on the information provided in the question.