Answer :
Final answer:
The correct answer is b) Insects. Cross-contamination transfers pathogens between food, surfaces, utensils, and hands, and can be carried by insects, leading to contamination.
Explanation:
Cross-contamination occurs when pathogens are transferred from one food or surface to another, carried by utensils, hands, or insects. This is a significant way through which food becomes contaminated, as various bacteria like Salmonella can easily spread from raw foods such as eggs, poultry, and meat to ready-to-eat items. It is crucial to maintain strict hygiene practices to avoid cross-contamination, such as using separate cutting boards for raw and cooked foods and ensuring proper cleaning of all utensils and surfaces between preparations. Additionally, preventing insects from contacting food is essential as they can carry and transmit pathogens to food items and surfaces.