Which of the following is an example of a physical hazard in food?

A physical hazard in food refers to any foreign object or element that can cause injury or illness when consumed. Broken glass is an exemplary instance of a physical hazard because it is a tangible item that can easily become part of the food product, leading to potential choking, cuts, or other injuries.

The other options represent different types of hazards. Botulism and Salmonella are both biological hazards, specifically related to microorganisms that can lead to foodborne illnesses. Allergens, while concerning for individuals with specific sensitivities, are classified as chemical hazards rather than physical hazards. Identifying and controlling physical hazards like broken glass is crucial in a food safety management system to ensure the safety and well-being of consumers.