What physical hazards are commonly found in food?

Choosing items such as hair, glass, and plastic as physical hazards in food is correct because these substances can cause harm if ingested. Physical hazards refer to any foreign objects in food that could potentially cause injury or discomfort. Hair can easily fall into food during preparation, while glass can break from containers or equipment, contaminating the food. Plastic, which can come from food packaging or utensils, presents similar risks. These items do not belong in food and can lead to choking, lacerations, or other injuries when consumed, highlighting the importance of maintaining a clean and safe food preparation environment.

Other options, while they may present hazards in different contexts, do not align with the definition of physical hazards. Uncooked ingredients imply a concern related to microbiological or chemical hazards rather than physical ones. Residual chemicals from cleaning agents refer to chemical hazards that can lead to foodborne illness if not properly rinsed away, not physical hazards. Excess moisture can lead to spoilage or microbial growth, which also falls under biological risks rather than physical hazards. Thus, the focus on identifying foreign objects directly correlates with the concept of physical hazards in food safety.