Final answer:
The holding time for McNuggets in a UHC at McDonald's is generally 20 minutes, which helps maintain their quality and readiness for customers.
Step-by-step explanation:
The holding time for McNuggets in the UHC (Universal Holding Cabinet) at McDonald's is typically around 20 minutes. The UHC is designed to keep food items like McNuggets warm and ready to serve without compromising their quality. Because the UHC holds food at a steady temperature, the McNuggets can maintain their texture and flavor for the duration of the holding time. It's essential for fast food restaurants to manage holding times for food safety and customer satisfaction.