Study the given information carefully and answer the question that follows.

Eight members—P, Q, R, S, T, U, V, and W—belong to a three-generation family with no single parent. P is married to Q and is the grandfather of W. T is the daughter-in-law of Q. R has only one child, V, who is female. S is the sister of R and is married to U. W is the son of U.

Who among the following is the mother of W?

The correct answer is S.

Step-by-Step Explanation:

1. Identify the gender and relationship of S and U:
The problem states that S is the sister of R, which establishes that S is female.
Since S is married to U, U must be male. Together, S and U form a married couple.

2. Determine the mother of W:
We are given that W is the son of U. Since U is married to S, S and U are the joint parents of W.
Because S is female, S is the mother of W.

3. Verification of the full family structure:
To confirm consistency for all 8 members (P, Q, R, S, T, U, V, W) across 3 generations with no single parent:
- Generation 1 (Grandparents): P (grandfather, male) is married to Q (grandmother, female).
- Generation 2 (Parents): P and Q have two children, R (male) and S (female).
- R is married to T (female, daughter-in-law of Q).
- S is married to U (male).
- Generation 3 (Children):
- R and T have one female child, V.
- S and U have one male child, W.

Hence, S is clearly the mother of W.