Which of the following is classified as a cleaning agent?

Detergents are classified as cleaning agents because they are specifically formulated to break down and remove dirt, grease, and food residues from surfaces and utensils. They work by reducing the surface tension of water, allowing it to better penetrate and lift away dirt and grime. The primary role of detergents is to clean surfaces to ensure they are hygienic and free from contaminants.

Chlorine, iodine, and quaternary ammonium compounds (quats) are primarily categorized as sanitizers or disinfectants rather than cleaning agents. They are used to kill germs and bacteria on surfaces after they have been cleaned, making them effective for sanitizing but not for the initial removal of dirt. Consequently, while all of these substances play a role in maintaining food safety and hygiene, only detergents are specifically designed for the cleaning process.