A, B, C, D, and E are five students with the following conditions: A scored more than B but less than C. D scored less than E but more than A. Who scored the highest?

D. E

In a group of five pets: Cat A is heavier than Cat B but lighter than Cat C. Dog D is heavier than Cat A but lighter than Dog E. Which pet is the lightest?

B. B

A group of four colors: Red, Blue, Green, and Yellow must be selected based on these conditions: Red cannot be selected if Blue is selected. Green can only be selected if Yellow is also selected. Which of the following selections is valid?

D. BLUE, YELLOW

There are four boxes labeled A, B, C, and D. Box A contains apples, Box B contains bananas, Box C contains cherries, and Box D is empty. If Box A is heavier than Box B and Box C is lighter than Box A, which box is the lightest?

D. D

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 included. 3) T can be included only if P is not included. Which of the following combinations is valid?

D. Q, R, S