Foodborne pathogens are

• A. Microorganisms on food that cause flavor changes.
• B. Microorganisms on food that spoil food without causing illness.
• C. Microorganisms on food that cause illness.
• D. Non-living contaminants that irritate the gastrointestinal tract.

Answer: (C)

Foodborne pathogens are living microorganisms that cause illness when people eat contaminated food. These include bacteria, viruses, and parasites that can multiply in food or produce harmful toxins, leading to symptoms like vomiting, diarrhea, or more serious disease. This distinguishes them from organisms that simply cause flavor changes or spoilage in foods, which affect taste, odor, or texture but don’t necessarily cause illness. Non-living contaminants, such as chemical toxins or pollutants, can irritate the gastrointestinal tract but are not pathogens themselves. So the key idea is that these pathogens are living agents capable of causing disease after ingestion, with examples like Salmonella, Norovirus, E. coli, and Listeria illustrating the concept.