What are the signs of food spoilage?

The correct response identifies key indicators that indicate food has spoiled. Unusual odors are a primary signal of spoilage, as they often result from bacterial growth or chemical changes in the food. Discoloration can also be a clear sign; for instance, fresh produce turning brown or meats developing an off-color can indicate the presence of spoilage microorganisms. Changes in texture, such as foods becoming mushy or slimy, further signal that the food is no longer safe to eat.

Other answers touch on aspects that may relate to food quality or safety but do not directly signify spoilage as clearly as the chosen option does. For example, excessive saltiness or sugar taste may indicate a product that has too much seasoning but does not necessarily mean it has spoiled. Unusually high temperatures can affect food safety, but they aren’t specific indicators of spoilage in the food itself. The presence of insects or pests also might indicate unsanitary conditions but is not a direct sign of spoilage in the food items. Therefore, the characteristics highlighted in the correct response provide a comprehensive understanding of how to identify spoiled food effectively.