Final answer:
Cooked food that has cooled should be reheated to at least 165°F (74°C) to ensure it is safe to eat.
Step-by-step explanation:
A food that has been cooked and then cooled may be reheated by heating it to a temperature of at least 165°F (74°C). This temperature is sufficient to kill most bacteria and ensure the food is safe for consumption. Keeping foods at the right temperature during and after cooking is crucial to prevent foodborne illnesses.