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 J is the uncle of K and K is the daughter of L, what is the relationship of L to J?

C. SISTER-IN-LAW

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

C. DAUGHTER-IN-LAW