'A # B' means 'A is the brother of B', 'A ^ B' means 'A is the daughter of B', 'A * B' means 'A is the aunt of B', and 'A % B' means 'A is the mother of B'. If P * G % U # V ^ T # Z * V, then how is Z related to G?-

So, according to the given family tree of the given expression, 'P * G % U # V ^ T # Z * V' is as follows:

So, from the above diagram, Z is G's husband's sister.

Thus, the correct answer is (d).