Correct Answer: U is Y's husband's mother's brother

Solution : Given:
A + B ⇒ A is the brother of B
A – B ⇒ A is the mother of B
A × B ⇒ A is the husband of B
A ÷ B ⇒ A is the sister of B
A @ B ⇒ A is the son of B

As per the given information, the family tree will be as follows –

Here, the quadrilateral represents the male and the circular figure represents the female in the figure.

Let's check each option –
First option: U is Y's husband's mother's brother – This is correct.
Second option: W, X, and Y are sisters – W is the mother of X and, the mother-in-law of Y. So, this is incorrect.
Third option: V is the father of X's mother – V is the sister of X's mother. So, this is incorrect.
Fourth option: Y is the wife of W – Y is the wife of X. So, this is incorrect.

So, only the statement in the first option is correct. Hence, the first option is correct.