Final answer:
The minimum hot holding temperature for mac and cheese according to food safety standards is 135°F to prevent bacterial growth and ensure food safety.
Step-by-step explanation:
The minimum hot holding temperature for mac and cheese according to food safety standards is 135°F. Foods need to be held at this temperature or higher to prevent the rapid growth of bacteria and other microorganisms, which can make food unsafe to eat. The range between about 40°F and 140°F is known as the 'danger zone' because bacteria multiply most rapidly within this temperature range. Holding food above this range is crucial to maintain its safety and quality.