Which example illustrates a biological contaminant?

Biological contaminants are living organisms or substances produced by living organisms that can cause foodborne illness. This includes harmful microorganisms such as bacteria, viruses, parasites, and fungi. The correct response identifies bacteria and viruses as examples of biological contaminants because they can multiply in food and cause illness if ingested.

In the context of food safety, understanding what constitutes a biological contaminant is crucial for preventing foodborne diseases. Other types of contaminants listed in the question, such as foreign objects, cleansers, and glass pieces, do not fall under biological contamination. Foreign objects can cause physical harm, while cleansers and sanitizers are chemical contaminants. Therefore, recognizing bacteria and viruses as biological contaminants is essential for effective food safety management and ensuring public health.