What constitutes physical contaminants in food?

Physical contaminants in food refer to any foreign objects that can accidentally get into food products and pose a risk to consumers. The correct answer highlights that items such as wood, glass, and jewelry are considered physical contaminants. These materials can cause injury or harm if ingested, which is why it is crucial to ensure that food preparation areas are free from such hazards.

The other options deal with different categories of food safety concerns. Bacteria and viruses from food handlers relate to biological contaminants, which can cause foodborne illnesses. Chemical residues from cleaning agents fall under chemical contaminants, which involve substances that can cause adverse health effects if ingested. Excessive food additives and preservatives, while potentially affecting health, do not qualify as physical contaminants since they are typically safe when used within recommended limits.

Thus, understanding physical contaminants helps in implementing proper food safety practices and preventing potential harm to consumers.