TASK DEFINITION: You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
PROBLEM: All of the following can become fossils except  
 (A) bones. (B) shells. (C) teeth. (D) rocks.

SOLUTION: D

PROBLEM: In the morning, students observed puddles of water all over the playground. What would best explain why the playground was dry in the afternoon?  
 (A) Animals drank the water. (B) The wind stopped blowing. (C) Someone dried the puddles. (D) The water evaporated during the day.

SOLUTION: D

PROBLEM: Perfume sprayed from a bottle spreads more easily in a warm room of 25°C than in a cool room of 15°C. Which of the following correctly compares perfume molecules at 25°C to those at 15°C?  
 (A) At 25°C, they have more mass. (B) At 25°C, they are moving faster. (C) At 25°C, they have less kinetic energy. (D) At 25°C, they are decreasing in volume.

SOLUTION:
B