Biological contaminants are ...

• A. By far, the most dangerous of the three. Most common cause of foodborne illness. Consist of microorganisms/pathogens; Ex: bacteria, viruses, fungi, and parasites
• B. The least dangerous of the three
• C. Not a real category
• D. Only viruses

Answer: (A)

Biological contaminants are living organisms or their byproducts that contaminate foods, and they pose the greatest risk among the three main hazard types because they can cause illness and outbreaks. They include bacteria, viruses, parasites, and fungi, which is why foodborne illnesses are so often linked to these organisms. They can multiply in foods under the right conditions, and many have a low infectious dose, so even small amounts can make people sick. That’s why this category is treated as the primary concern in food safety, with controls like proper cooking to safe temperatures, good personal hygiene, preventing cross‑contamination, and maintaining appropriate refrigeration.