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.

Q: If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken?  
 (A) wipe it with a paper towel (B) call 911 for emergency services (C) have someone go get the school nurse (D) flush the eye with water at an eyewash station

A: D
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Q: The body is made up of many systems that interact with one another. For example, the skeletal system and the muscular system work together to help the body move. Which system works with the respiratory system to distribute oxygen to the body?  
 (A) muscular system (B) digestive system (C) lymphatic system (D) circulatory system

A: D
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Q: Which part of a plant cell is responsible for controlling the activities of the other parts of the cell?  
 (A) Vacuole (B) Nucleus (C) Cell wall (D) Chloroplast

A:
B
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