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: Some people carry a mutated allele of a particular gene that makes them resistant to HIV infection and AIDS. Which best describes this type of mutation?  
 (A) beneficial (B) asexual (C) harmful (D) unicellular

SOLUTION: A

PROBLEM: A student measured liquid with a graduated cylinder. Which of the following units could be used to record the volume of the liquid?  
 (A) pounds (B) meters (C) grams (D) milliliters

SOLUTION: D

PROBLEM: Fungi recycle leaves in forests. Fungi release chemicals onto the leaves to break them down into smaller particles. The fungi use the small particles for growth. Which process allows fungi to obtain the nutrients they need from dead leaves?  
 (A) circulation (B) digestion (C) reproduction (D) respiration

SOLUTION:
B