Food in the refrigerator MUST be kept at _________.

Food in the refrigerator should be kept at a temperature range of 0-40°F (-18 to 4°C). This temperature range is considered safe for inhibiting the growth of bacteria and helps to maintain the quality and freshness of perishable foods. Different foods may have specific storage temperature requirements, so it's always a good idea to refer to food safety guidelines and follow any specific recommendations for different types of food.