Question

what is an unsafe safe way to defrost food? at room temperature in the refrigerator in the microwave under cold running water

Explanation:

Defrosting food at room - temperature can allow bacteria to grow rapidly as it stays in the "danger zone" (40 - 140°F or 4 - 60°C) for too long. Defrosting in the microwave can lead to uneven heating and partial cooking in some areas. Defrosting under cold running water is a safe method if done properly. Defrosting in the refrigerator is a slow but safe method as it keeps the food at a low temperature throughout the defrosting process. Among the options, defrosting at room temperature is unsafe.

Answer:

at room temperature