Which method is NOT a safe way to defrost food?

Defrosting food at room temperature is not a safe method because it allows the outer layer of the food to reach temperatures where bacteria can multiply rapidly, even while the inside remains frozen. This can increase the risk of foodborne illnesses. In contrast, defrosting in the refrigerator, under cold water, or in the microwave oven are considered safe because they keep food at temperatures that minimize bacterial growth. The refrigerator maintains a cold environment, cold water ensures that the food stays below the danger zone while being thawed, and the microwave cooks the food directly, preventing prolonged exposure to unsafe temperatures.