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

A. GRANDSON

If A is the brother of B and B is the sister of C, what is the relationship of C to A?

B. BROTHER

If A is the brother of B, and B is the sister of C, what is the relationship of C to A?

B. BROTHER

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

A. BROTHER

If N is the father of O and P is the son of O, what is the relationship of N to P?

A. GRANDFATHER