Which statement describes parasites?

• A. They are a type of chemical contaminant.
• B. They are transferred by air only.
• C. They live in or on a host and obtain nutrients from it.
• D. They are non-living particles.

Answer: (C)

Parasites are living organisms that rely on another living being—the host—for nutrients. They live in or on the host and use its resources to grow and reproduce, which is why they’re neither chemical contaminants nor non-living particles. The idea that they’re transferred by air only isn’t accurate because transmission can involve contaminated food or water, direct contact, or other vectors, depending on the parasite. In a food-service context, recognizing this helps explain why thorough cooking, good personal hygiene, and safe handling of food and water are essential to prevent parasite transmission.