Foodborne illness is best defined as

• A. Disease caused by contaminated food
• B. Infections transmitted by air
• C. Allergic reactions to food
• D. Illness due to spoiled water

Answer: (A)

Foodborne illness means illness that results from eating food contaminated with harmful organisms or their toxins. That’s why the best definition is that the illness is caused by contaminated food—the food itself is the source of the illness after ingestion. This is distinct from airborne infections, which spread through the air, and from allergic reactions to foods, which are immune responses not caused by contamination of the food with pathogens. It’s also not about spoiled water, which is a waterborne issue rather than a foodborne one (though water can contaminate food). Understanding this helps emphasize why safe handling, proper cooking, and preventing cross-contamination are key to preventing these illnesses.