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 these is an inherited behavior?  
 (A) a seal balancing a ball (B) a dog getting the newspaper (C) a spider spinning a web (D) an ape using sign language

SOLUTION: C

PROBLEM: To which group does an animal belong if it lays eggs and has scales and gills?  
 (A) amphibian (B) bird (C) fish (D) reptile

SOLUTION: C

PROBLEM: Which interaction within an ecosystem is characterized by gradual change from one community of organisms to another?  
 (A) symbiosis (B) food webs (C) energy pyramids (D) succession

SOLUTION:
D