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: Auroras occur where Earth's magnetosphere traps high-energy particles in which region of the atmosphere?  
 (A) troposphere (B) stratosphere (C) thermosphere (D) exosphere

SOLUTION: C

PROBLEM: A cut to the skin is treated with antiseptic first to avoid  
 (A) an immune response. (B) a bacterial infection. (C) bruising of tissues. (D) an allergic reaction.

SOLUTION: B

PROBLEM: Deer are plants-eaters. A winter storm kills many of the plants deer eat. The storm will most likely result in the deer  
 (A) shedding a lot of fur. (B) traveling in a herd. (C) becoming thin. (D) feeding on meat.

SOLUTION:
C