instruction:
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.
question:
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.
answer:
D


question:
In which case does a physical change occur?  
 (A) Ice melts into water. (B) Bread burns in a toaster. (C) A cake bakes in an oven. (D) Two chemicals form a new substance.
answer:
A


question:
Onions can reproduce from bulbs. One parent bulb generates daughter bulbs with duplicate genetic information. Which is the most likely advantage of this kind of reproduction?  
 (A) Population size remains constant. (B) Beneficial mutations are inevitable. (C) Genetic variation is maximized. (D) Large quantities of individuals can be produced rapidly.
answer:

D