Which of the following is NOT a biological hazard?

Nails are classified as a physical hazard rather than a biological hazard. Biological hazards refer to harmful organisms or substances produced by living organisms that can cause illness or health risks in food. Examples include bacteria, viruses, and fungi, all of which can lead to foodborne illnesses due to their presence in food or the environment.

Physical hazards, on the other hand, involve any foreign objects that can unintentionally contaminate food products, posing a risk of injury or choking to consumers. In this case, nails fall into that category as they are not living organisms and do not contribute to biological contamination but rather represent a risk due to their physical presence. Also, other examples of physical hazards might include hair, glass shards, or pieces of metal. Understanding the distinction between biological and physical hazards is essential for food safety and proper hazard analysis in food management practices.