Which tray is identified as a sortation level?

The Area Distribution Center (ADC) is identified as a sortation level because it represents a stage in the mail processing system where mail is sorted based on geographic regions for more efficient delivery. At this level, bulk mail is often organized and sorted to prepare it for transportation to even more localized distribution centers or facilities. This helps to expedite the delivery process by minimizing the amount of hand-sorting needed during the final delivery stages.

The other options represent different aspects of the mail processing network. For instance, a Sectional Center Facility (SCF) is designed to handle large volumes of mail but isn't specifically a sortation level like the ADC, which operates with a more focused geographic sorting function. Similarly, the Bulk Mail Center (BMC) deals with large volumes of mail but not in the same geographic sorting manner, and the Originating Facility is the starting point for mail before it begins its journey through the system, not a point of sortation in the broader processing landscape.