What kind of mail requires special consideration for hazardous materials?

Package Services is the correct choice when considering mail that requires special attention for hazardous materials. This category encompasses various shipping options that allow for the transport of specific items, including those classified as hazardous. These materials can pose risks to health, safety, or the environment, necessitating strict compliance with safety regulations during handling and shipping.

When dealing with Package Services, it is essential to follow guidelines set forth by the Postal Service and other regulatory agencies. These regulations cover packaging requirements, labeling, and documentation for shipping hazardous materials to ensure safe and compliant transport.

In contrast, Standard Mail and Priority Mail are primarily used for general mailing purposes and do not typically include hazardous materials. Parcel Return Services focus on the return of parcels and may have different handling requirements, but they are not specifically designed for hazardous materials.