"Chilling foods to proper temperatures is one of the best ways to slow the growth of these bacteria. To ensure that your refrigerator is doing its job, it's important to keep its temperature at 40 °F or below; the freezer should be at 0 °F."
The Answer is D, temperature control dial in the freezer. This allows you to increase or decrease the temperature to your desired amount. This can help defrost or freeze items or foods quicker in a safe and effective way.
