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: Which of the following climates has cold winters and hot summers?  
 (A) polar (B) subtropical (C) temperate (D) tropical

SOLUTION: C

PROBLEM: In a northern state, a room used for growing plants is not allowing enough light to enter for healthy plant growth. Adding windows in walls facing which direction would best solve this problem?  
 (A) north (B) south (C) east (D) west

SOLUTION: B

PROBLEM: What causes a person to have blue eyes?  
 (A) eating foods high in protein at a young age (B) having a brother or sister with blue eyes (C) being overexposed to the Sun at a young age (D) receiving a gene for blue eyes from each parent

SOLUTION:
D