Correct option is C
Given:
A + B means ‘A is the wife of B’
Symbol | + | - | | |
Relation | Wife | Son | Husband | Sister |
‘P Q ÷ R – S + T’?

Let's make the Family tree of the given expressions on the basis of given information:

As per the family tree, P is the husband of Q, meaning P is the son-in-law of T,
or P is the husband of T’s daughter.
Thus, the correct option is (c) Daughter’s husband.