Five students: X, Y, Z, W, and V are participating in a competition. X is older than Y but younger than Z. W is older than V but younger than X. Who is the youngest among them?

B. Y

In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions apply: 1) Alice cannot be selected if Bob is selected. 2) Charlie must be selected if David is not selected. 3) Eva can only be selected if Alice is also selected. Which of the following groups can be selected?

A. ALICE, CHARLIE, EVA

A committee of four members is to be formed from the following individuals: P, Q, R, S, and T. The selection criteria are: 1) P cannot be selected if Q is selected. 2) R must be included if S is included. 3) T can be included only if P is not included. Which of the following combinations meets these criteria?

C. Q, R, S

In a group of five friends: A, B, C, D, and E, the following conditions are given: A is taller than B but shorter than C. D is shorter than E but taller than A. Who is the tallest among them?

C. C

A committee of four members is to be formed from the following individuals: P, Q, R, S, and T. The selection criteria are: 1) P and Q cannot be selected together. 2) R must be included if S is selected. 3) T can be included regardless of the others. Which of the following combinations meets the criteria?

B. Q, R, S, T