A is the son of B, but B is not the father of A. How is B related to A?

AGrandmother

BGrandfather

CMother ✓ Correct

DUncle

Correct answer: (C) Mother

Explanation

B is the mother of A.

A is stated to be the son of B, so B is a parent of A.

It is also stated that B is not the father of A.

A parent who is not the father must be the mother.

Hence B relates to A as mother.

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