What do Particulate filters do in non-powered air-purifying respirators?

Particulate filters in non-powered air-purifying respirators are designed to remove aerosols, which can be either solid or liquid particulates, from the air. These filters are specifically engineered to capture and trap these particles, ensuring that the wearer breathes in clean air free from harmful substances. Options A, B, and C are incorrect because particulate filters are not limited to removing gases, liquids, or solid particulates only; they are designed to remove aerosols, which encompass both solid and liquid particulates.