If S is the uncle of T and T is the daughter of U, how is S related to U?

C. BROTHER-IN-LAW

O is the son of P. Q is the daughter of R, who is the brother of P. How is Q related to O?

A. COUSIN

If N is the granddaughter of O, and P is the daughter of N, what is O to P?

D. GRANDPARENT

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

A. AUNT

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER