M is the uncle of N. N is the daughter of O. How is O related to M?

B. SISTER

If A is the brother of B, and B is the sister of C, how is A related to C?

A. BROTHER

If G is the son of H and H is the brother of I, what is G's relationship to I?

A. NEPHEW

If G is the son of H and H is the mother of I, what is the relationship of I to G?

D. SIBLING

If G is the son of H, and H is the mother of I, what is the relationship of G to I?

A. BROTHER