Which of the following cannot be applied in a restaurant by the supervisor of food operations?

The correct choice highlights that chemical insecticides and rodenticides cannot be applied in a restaurant setting by the supervisor of food operations. This is due to the strict regulations and safety concerns surrounding the use of such chemicals in environments where food is prepared and served. When used improperly, these chemicals can pose serious health risks to both staff and patrons, including contamination of food products.

Restaurants are required to maintain safe and sanitary conditions, and the use of chemical pesticides can compromise this effort. Instead, safer alternatives or methods such as integrated pest management practices should be utilized, which focus on preventing pest issues without relying heavily on potentially harmful chemicals. Organic fertilizers, essential oils, and natural repellents represent more acceptable solutions within the food handling environment, as they tend to be less toxic and more aligned with food safety regulations. By adhering to these guidelines, supervisors can ensure the safety and well-being of everyone in the restaurant.