Asked by GIANSH GUPTA KHUNDKER · BIRLA BRAINIACS
Answer: C. Nephew/Niece
A and B are siblings, and C is their sibling too. C is D's father, so C is male (A's brother). D is the child of A's brother, so D is A's nephew (if male) or niece (if female). The answer is Nephew/Niece.
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