Explanation:

- Let's analyze each statement:

- O is A's sister-in-law. This means O is married to A's sibling.

- B, A's father, has two grandsons, implying A has two sons.

- N is the parent of T, and N is female.

- C is N's brother-in-law. Thus, C is married to A or N.

- Y, N's daughter, makes T and Y siblings.

- V, O's only child, suggests O and A’s sibling are V’s parents.

- Relationship Analysis:

- W as A's son-in-law suggests W is married to one of B's grandchildren (A's child).

- How is T related to W?

- If W is married to Y (N's daughter), then T is Y's sibling.

- In this case, T is W's brother-in-law (if T is male).

Thus, T is related to W as ?? ”Brother-in-law”.