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: The Grand Canyon is an example of  
 (A) erosion. (B) deposition. (C) an earthquake. (D) volcanic activity.

SOLUTION: A

PROBLEM: Sickle cell anemia is a genetic disease caused by an autosomal recessive gene. If each parent carries one sickle cell allele, what are the chances that their child will have sickle cell anemia?  
 (A) no chance (B) one in four (C) two in four (D) three in four

SOLUTION: B

PROBLEM: Neon (Ne), argon (Ar), and krypton (Kr) are in the same column on the Periodic Table of the Elements. What characteristic do these elements have in common?  
 (A) atomic mass (B) negative electrical charge (C) number of neutrons (D) full valence electron shells

SOLUTION:
D