A family consists of a father, a mother, and three children: John, Lisa, and Mark. John is the eldest, Lisa is the only daughter, and Mark is the youngest. Which of the following is true?

C. MARK IS A BOY.

A fruit basket contains an apple, a banana, an orange, and a carrot. Which of the following items is not a fruit?

D. CARROT

In a group of five friends: Alice, Bob, Charlie, David, and Eva, Alice is taller than Bob but shorter than Charlie. David is shorter than Eva but taller than Bob. Who is the tallest among them?

C. CHARLIE

A, B, C, D, and E are five different fruits. A is sweeter than B but less sweet than C. D is sweeter than E but less sweet than A. Which fruit is the least sweet?

B. B

In a group of five friends: Alice, Bob, Charlie, David, and Eve, Alice is a teacher, Bob is a doctor, Charlie is an engineer, David is a lawyer, and Eve is a nurse. Which of the following pairs belong to the same profession?

D. BOB AND DAVID