Which of the following best lists the types of contamination that can occur during food preparation?

• A. Biological and chemical only.
• B. Biological, chemical, and physical.
• C. Chemical contamination only.
• D. Biological contamination only.

Answer: (B)

Contamination during food preparation can come from three broad kinds: biological, chemical, and physical. Biological contamination involves living organisms such as bacteria, viruses, or parasites that can be present on raw ingredients, in the hands, or on cutting boards and utensils, and can spread if proper hygiene and cooking temperatures aren’t followed. Chemical contamination comes from substances like cleaners, sanitizers, pesticides, or residues from metals and other materials that can transfer to food if cleaning steps aren’t rinsed or handled correctly. Physical contamination refers to foreign objects like hair, glass, plastic, or metal fragments that can accidentally fall into food during processing or handling.

Because any of these categories can occur in the kitchen, the most complete answer includes all three types—biological, chemical, and physical. The other options omit one or more categories, which is why they don’t fully describe the range of possible contaminants in food preparation.