At what temperature range is a refrigerator maintained?

A refrigerator is typically maintained at a temperature range of 2 to 8 degrees Celsius to ensure the safe storage of perishable food items. This temperature range slows down the growth of bacteria and helps maintain the quality of food, reducing the spoilage rate. It also prevents the freezing of most food items while keeping them sufficiently cold to preserve freshness.

The other options refer to temperatures that are either too cold, as in the case of extreme low temperatures, or too warm, as in ambient room temperatures. These would not adequately preserve food or could even result in spoilage. Therefore, 2 to 8 degrees Celsius is the appropriate temperature range for refrigeration, emphasizing safety and efficiency in food storage.