M is the grandmother of N. N has an uncle O who is the brother of N's mother. How is O related to M?

A. SON

D is the mother of E and F. G is the brother of D. How is G related to E?

A. UNCLE

H is the daughter of I. J is the son of I. How is H related to J?

A. SISTER

K is the father of L and M. N is the sister of K. How is N related to L?

A. AUNT

O is the son of P. Q is the daughter of R, who is the brother of P. How is Q related to O?

A. COUSIN