Which statement describes natural toxins?

• A. Cleaning solution
• B. Bacteria
• C. Toxins from mushrooms, plants, mold
• D. Metal shavings

Answer: (C)

Natural toxins are substances produced by living organisms in nature that can contaminate foods and cause illness. They commonly come from mushrooms, certain plants, and molds. For example, some mushrooms harbor poisonous toxins, some plants produce toxic compounds like solanine in green potatoes, and molds can produce mycotoxins such as aflatoxins in stored grains. This is what makes them natural toxins—they’re produced by the organism itself and can be present in foods you might encounter. The other options don’t fit because cleaning solutions are chemical hazards, metal shavings are physical hazards, and while some bacteria can produce toxins, the description here points to toxins from mushrooms, plants, and mold as the classic natural toxins.