TASK DEFINITION: You are given a science question (hard-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: A pharmaceutical company developed a drug to help relieve headaches. Recently, the pharmaceutical company discovered that the drug may cause nausea in a small number of people who might take the drug. Which is the most ethical course of action that the drug company could take?  
 (A) Discontinue the use of the drug. (B) Inform people of the possible side effects. (C) Reduce the amount of drug given to people. (D) Modify the drug to include medicine that prevents nausea.

SOLUTION: B

PROBLEM: When you make soap bubbles, what is inside the bubbles?  
 (A) Air (B) Soap (C) Water (D) Nothing

SOLUTION: A

PROBLEM: Which type of cell is connected to muscle fibers to facilitate control of the muscle?  
 (A) nervous (B) skeletal (C) circulatory (D) respiratory

SOLUTION:
A