In a family of six members P, Q, R, S, T, and U, there are two males and four females. P is a teacher, R is the mother of S, and T is the father of U. Q is not a teacher. Who is the male member of the family?

Answer: C. T
Since R is the mother of S, she is female. T is stated to be the father of U, making T male. P is a teacher but not specified as male or female, but since there are only two males and T is one, P must be female.