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: When a person speaks, the type of wave produced can be described as all these except  
 (A) transverse. (B) mechanical. (C) compression. (D) longitudinal.

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: The human body is made up of organ systems that work together as one unit. Which systems work together to prepare and distribute food for cells?  
 (A) digestive and circulatory (B) digestive and endocrine (C) nervous and respiratory (D) nervous and excretory

SOLUTION:
A