To ensure the safety of mail and determine the mailability of specific items, what publication should a sales and service associate utilize?

The correct choice is Publication 52, which specifically addresses the safety and mailability of hazardous materials and other special items. This publication provides comprehensive guidelines and regulations regarding what can and cannot be mailed, ensuring that all postal services comply with safety standards.

Utilizing Publication 52 allows sales and service associates to determine the correct handling of various items, thus protecting both the mail carriers and the public. It details the classifications of hazardous materials, packaging requirements, and other essential practices needed for mailing potentially dangerous items.

While other publications might provide general postal information or specifics about retail procedures, they do not focus as specifically on safety concerns and mailability standards as Publication 52 does. Hence, for ensuring the safe processing of mail and adhering to regulations regarding specific items, Publication 52 is the most relevant resource.