S is the daughter of X's father-in-law's wife Y. O is the only sibling of S and is married to J. How is X related to S?

X's father-in-law's wife Y
S is the daughter of Y
O is the only sibling of S and is married to J

According to the given information, Family tree diagram will be:

As per the Family tree, S is the daughter of X’s father-in-law, meaning S is X’s wife, so X is S’s husband.

Thus, the correct option is (c) Husband