If M is the grandmother of N and O is the mother of N, what is O's relationship to M?

A. DAUGHTER

If X is the father of Y and Y is the brother of Z, what is Z's relation to X?

C. CHILD

If P is the uncle of Q and Q is the daughter of R, what is R's relation to P?

C. SISTER-IN-LAW

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 F is the son of E, what is F to D?

A. BROTHER