Question

microorganisms that cause most food - borne illness are:

moulds

parasites

viruses

bacteria

Explanation:

Bacteria are the microorganisms that cause most food - borne illness. Bacteria can grow and multiply in food under suitable conditions (such as proper temperature, moisture, and nutrients). Some bacteria produce toxins that can make people sick when the contaminated food is consumed. Moulds can cause food spoilage but are not the main cause of most food - borne illnesses. Parasites can cause food - borne diseases but are less common compared to bacteria in terms of causing the majority of food - borne illnesses. Viruses can also cause food - borne illness, but bacteria are more frequently associated with the majority of cases.

Answer:

bacteria