Five people - P, Q, R, S, and T - are sitting in a row. P is to the left of Q but to the right of R. S is sitting at one of the ends. T is not next to S. Who is sitting in the middle?

A. P

In a class of students: John, Lisa, Mark, and Sarah, John scored higher than Lisa but lower than Mark. Sarah scored the lowest. Who scored the highest?

C. MARK

Four friends A, B, C, and D are sitting in a row. A is to the left of B but to the right of C. D is not at either end. Who is sitting in the middle?

A. A

Four students - A, B, C, and D - scored different marks in an exam: 85, 90, 75, and 80. A scored more than B but less than C. D scored the lowest. Who scored 90 marks?

C. C

In a family, A is the grandmother of B, and B is the son of C. If C is married to D, what is the relationship between A and D?

C. MOTHER-IN-LAW