Food contact surfaces may be sanitized by using hot water or

Food contact surfaces can be sanitized effectively using hot water or quaternary ammonium compounds, which are used as sanitizers in commercial kitchens. This option is correct because quaternary ammonium compounds, often referred to as "quats," are widely accepted as safe and effective for reducing foodborne pathogens on surfaces that come into contact with food. They work by disrupting the cell membranes of bacteria, viruses, and fungi, effectively killing or inactivating these germs.

The other options—delimers, degreasers, and abrasive cleaners—serve different purposes in cleaning. Delimers are used to remove mineral scale and lime build-up; degreasers are effective for cutting through grease and food residue, and abrasive cleaners can scratch surfaces while removing tough stains. However, they do not function as sanitizers, which is crucial for ensuring food safety in a food handling environment. Sanitation is key in preventing foodborne illnesses, making the use of quaternary ammonium compounds or hot water an essential practice in food service operations.