A is D's brother. D is B's father. B and C are sisters. How is C related to A?
(A) Cousin
(B) Niece
(C) Aunt
(D) Nephew
Answer : C is A's niece.
Explanation :
Given that A is D's brother, it
implies that A and D are siblings. Additionally, D being B's father indicates
that B is D's daughter. Since B and C are sisters, they share the same parents,
including D. Therefore, D is also C's father. As a result, A is both B's and
C's uncle. Since C is the daughter of A's sibling (D), C is A's niece.