Correct Answer: Z is the maternal grandfather of S

Solution : Given:
A @ B ⇒ A is the sister of B
A & B ⇒ A is the brother of B
A # B ⇒ A is the wife of B
A ^ B ⇒ A is the mother of B
A + B ⇒ A is the father 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.
Now, let's check the options –
First option: Z is the maternal grandfather of S – From the above family tree, it is evident that Z is the uncle of S. So, this option is incorrect.
Second option: W is the husband of U – From the above family tree, it is evident that W is the husband of U. So, this option is correct.
Third option: E is the mother-in-law of Z – From the above family tree, it is evident that E is the mother-in-law of Z. So, this option is correct.
Fourth option: U is the sister of H – From the above family tree, it is evident that U is the sister of H. So, this option is correct.

Hence, the first option is correct.