Final answer:
Previously cooked and refrigerated foods that will be served from a hot holding unit must be reheated to a minimum internal temperature of 74 degrees C (165 degrees F).
Step-by-step explanation:
Previously cooked and refrigerated foods that will be served from a hot holding unit must be reheated to a minimum internal temperature of 74 degrees C (165 degrees F). This is necessary to kill any bacteria that may have grown during the refrigeration period. Reheating the food ensures that it is safe to eat and reduces the risk of foodborne illnesses.