What is a purifier?

• A. Something used to remove dirty or harmful substances
• B. A device that transports medications
• C. A device that stores purified water
• D. A device that records patient data

Answer: (A)

Purifiers are tools designed to remove dirty or harmful substances from the air, water, or surfaces, making an environment safer and cleaner. In health and safety practice, using a purifier helps reduce exposure to contaminants like dust, smoke, bacteria, and chemicals, which protects people from potential harm. That’s why the statement describing a purifier as something used to remove dirty or harmful substances is the best fit. Other options describe devices with different roles—transferring medications, storing purified water, or recording patient data—so they don’t define what a purifier does.