Which option best describes purifier in health and safety terms?

Which option best describes purifier in health and safety terms?

• A. A device that removes dirty or harmful substances
• B. A device that purifies air and water
• C. A device that cleans floors
• D. A device that removes contaminants from air or water

Answer: (A)

In health and safety terms, a purifier is defined by its purpose to remove substances that are dirty or harmful. That broad function—taking out contaminants to improve safety and cleanliness—is what makes the description “a device that removes dirty or harmful substances” the best fit. It captures the essential idea of purification across different contexts, whether it’s air, water, or other environments. The other descriptions are narrower or off-target: purifying air and water is a specific application, not the universal function of all purifiers; cleaning floors isn’t about purification; removing contaminants from air or water is very close but focuses on specific media rather than the underlying purpose of purifying in general.

In health and safety terms, a purifier is defined by its purpose to remove substances that are dirty or harmful. That broad function—taking out contaminants to improve safety and cleanliness—is what makes the description “a device that removes dirty or harmful substances” the best fit. It captures the essential idea of purification across different contexts, whether it’s air, water, or other environments.

The other descriptions are narrower or off-target: purifying air and water is a specific application, not the universal function of all purifiers; cleaning floors isn’t about purification; removing contaminants from air or water is very close but focuses on specific media rather than the underlying purpose of purifying in general.