Which class of mail contains the subclass of Media Mail?

Media Mail is a specialized subclass of Package Services offered by the United States Postal Service (USPS). This service is designed specifically for shipping educational materials, such as books, printed music, sound recordings, and video recordings, at a lower cost compared to other mailing options.

By being categorized under Package Services, Media Mail benefits from the pricing and criteria established for this category, which allows for more economical shipping of heavier items that fit the educational criteria. This distinction is important because it emphasizes that Media Mail is not meant for general correspondence or non-educational materials, ensuring that the service remains focused on delivering media-related shipments efficiently and affordably.

The other choices do not include Media Mail as they relate to different classifications with distinct purposes. For instance, First-Class Mail is primarily for personal correspondence and time-sensitive documents, Standard Mail is mainly for bulk advertisements and marketing materials, and Priority Mail is for packages that require faster delivery timelines. Thus, Package Services is the correct context for Media Mail.