Correct Answer: U is the mother’s brother of P

Solution : Given:
B % D ⇒ B is the brother of D
B & D ⇒ B is the mother of D
B × D ⇒ B is the husband of D
B # D ⇒ B is the sister of D
B + D ⇒ B is the son of D
B @ D ⇒ B is the father of D

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.

Now, let's check the given options –
First option: P is the son of T – From the above family tree, it is evident that P is the son of S and T is the aunt of P. So, this option is incorrect.
Second option: S is the brother-in-law of T – From the above family tree, it is evident that S is the sister-in-law of T. So, this option is incorrect.
Third option: U is the mother’s brother of P – From the above family tree, it is evident that U is the mother’s brother (uncle) of P. So, this option is correct.
Fourth option: P is the daughter of T – From the above family tree, it is evident that P is the son of S and T is the aunt of P. So, this option is incorrect.

Hence, the third option is correct.