If M is the grandmother of N and O is the father of N, what is O to M?

A. SON

If D is the daughter of E and E is the sister of F, what is the relationship of D to F?

A. NIECE

If D is the daughter of E, and E is the mother of F, what is the relationship of F to D?

A. BROTHER

If D is the daughter of E and F is the son of E, what is F to D?

A. BROTHER

If G is the uncle of H and H is the daughter of I, what is the relationship of I to G?

A. BROTHER