Which of the following is NOT an example of a physical hazard?

The choice of cleaning chemicals is correct because they are classified as a chemical hazard rather than a physical hazard. Physical hazards are typically identifiable materials or objects that can cause harm through physical means, such as contamination or injury. Examples of physical hazards include metal shards, bones, and plastic pieces, all of which are solid objects that can inadvertently end up in food and pose a risk of injury or harm if ingested.

In contrast, cleaning chemicals are substances used for cleaning and disinfection, and they pose a risk mainly through their chemical properties, such as toxicity or corrosiveness. Understanding the distinction between physical and chemical hazards is crucial in food safety, as it allows for appropriate risk management strategies to protect consumers.