What is the minimum number of pieces required for a 3-digit bundle of USPS Marketing Mail?

For a 3-digit bundle of USPS Marketing Mail, the minimum requirement is that a bundle must contain at least 10 pieces. This standard is part of the guidelines for preparing mail to ensure efficiency and cost-effectiveness in processing. When mail pieces are consolidated into bundles, they help streamline sorting and delivery for the USPS, and having a minimum number of pieces ensures that the bundles are large enough to be processed efficiently.

Lower quantities, such as 5 pieces, would fall short of this requirement and would not meet USPS standards for bundling, which facilitates better handling through various stages of the mailing process. Thus, the choice indicating 10 pieces is the correct answer, as it aligns with USPS regulations governing Marketing Mail preparation.