The optimal temperature for a refrigerator is around 4 degrees Celsius or 40 degrees Fahrenheit. The closest answer from the choices is A. Cold - 41 F. This is because bacterial growth is inhibited in temperatures below 4 degrees Celsius or 40 degrees Fahrenheit and will able to prevent the food stored from spoiling. Between 4 degrees Celsius (40 degrees Fahrenheit) to 58 degrees Celsius (135 degrees Fahrenheit) are the danger zones that promote bacterial growth. Above 58 degrees Celsius (135 degrees Fahrenheit) will also inhibit bacterial growth.
