What term is used when adding a substance by tablets, liquid, or gas to inactivate or kill pathogens?Group of answer choicesChlorinationOzoneUV light

The term used when adding a substance by tablets, liquid, or gas to inactivate or kill pathogens is Chlorination. Chlorination refers specifically to the process of adding chlorine or chlorine compounds to water as a means of disinfecting it. This method is commonly used in water treatment to eliminate harmful microorganisms, ensuring that the water is safe for consumption.

While ozone and UV light are also methods of disinfection, they do not involve adding a substance in the form of tablets, liquid, or gas to the water; instead, ozone is a gas that can be bubbled through water, and UV light involves using radiation to disrupt pathogen DNA. Therefore, among the given options, chlorination is the most accurate choice for the described process.