How can you tell if food has been contaminated?

The correct answer focuses on the visible signs of food contamination, such as changes in color, odor, or texture, which are critical indicators that food may no longer be safe to consume. These attributes often signal spoilage or potential contamination from harmful microorganisms. For instance, you might observe a change in color, such as browning or dullness, indicating that the product has deteriorated. An off or sour smell can suggest spoilage, and a change in texture, like sliminess, can be associated with bacterial growth.

Other options are less reliable. Temperature consistency is important for food safety but does not definitively indicate contamination. Expiration dates provide guidance but don’t account for how the food has been handled or stored afterward. Relying solely on smell can lead to dangerous outcomes, as some harmful pathogens may not produce any noticeable odors or can be present without altering the appearance of the food. Therefore, being attentive to visible signs is essential for effectively identifying food contamination.