Concept:Understanding family tree relationships from given statements.Explanation:• “A’s mother” is the sister of B. So A’s mother and B are siblings.• “She” (A’s mother) has a daughter C. So C is the child of A’s mother.• Therefore, B is the sibling of C’s mother.• If B is male, B is C’s maternal uncle. (No “aunt” option given, so B is assumed male.)Answer:Maternal Uncle