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: How do traits of animals such as ear shape, nose shape, and hair color most often get passed to offspring?  
 (A) sexual reproduction (B) asexual reproduction (C) adaptation (D) instinct

SOLUTION: A

PROBLEM: What happens when water flows over a rock for a long period of time?  
 (A) erosion (B) flooding (C) breakage (D) evaporation

SOLUTION: A

PROBLEM: Which of the following devices relies on electromagnetic radiation in the radio wave region of the spectrum for operation?  
 (A) sun tanning lamp (B) electric light bulb (C) cellular telephone (D) electric toaster

SOLUTION:
C