How does mail sorting typically work in a large facility?

In a large mail facility, sorting is a systematic process that organizes mail in an efficient and timely manner to ensure it reaches its intended destination. The correct answer describes this process accurately, as it typically involves a series of designated stations or processes. At these stations, mail is categorized based on various criteria such as size, weight, destination, and type of delivery service. This organized approach allows for quick identification and routing of mail items, which helps to streamline operations and enhance overall productivity.

In contrast, sorting mail only by hand would be too slow and inefficient for the high volumes handled in large facilities. Sorting occurring exclusively at the end of the day would not be practical, as it would delay the delivery process. Additionally, sorting mail randomly would lead to incorrect routing and significant errors, making it ineffective for a facility that handles large quantities of mail. Thus, the systematic categorization and direction of mail to its destination is paramount in ensuring reliable service and operational efficiency.