There are four people: P, Q, R, and S. P is older than Q but younger than R. S is younger than Q. Who is the youngest among them?

D. S

There are four animals: a dog, a cat, a rabbit, and a parrot. The dog is not a mammal, the cat is a mammal, the rabbit is a mammal, and the parrot is a bird. Which of the following statements is true?

B. ONLY THE CAT AND RABBIT ARE MAMMALS

In a class, there are three types of students: A, B, and C. Type A students are good at mathematics, Type B students are good at science, and Type C students are good at literature. If a student is good at science, which type do they belong to?

B. TYPE B

There are four pets: a dog, a cat, a parrot, and a rabbit. The dog is bigger than the cat but smaller than the rabbit. The parrot is smaller than the cat. Which pet is the largest?

C. RABBIT

There are four animals: a dog, a cat, a rabbit, and a parrot. The dog is not a mammal, the cat is a mammal, the rabbit is a mammal, and the parrot is a bird. Which of the following is a mammal?

B. CAT