What types of mail are typically categorized as third-class mail?

Third-class mail is primarily designed for advertising and bulk mailings, making it a cost-effective option for businesses and organizations looking to reach a large audience. This classification typically includes items such as flyers, circulars, and promotional materials that are sent in substantial quantities.

The pricing structure for third-class mail is advantageous for mailers because it allows them to send bulk items at a lower rate compared to first-class mail. This classification does not prioritize speed of delivery, which makes it suitable for non-urgent communications and marketing strategies.

In contrast, the other types of mail listed in the options do not fall under third-class mail. For instance, priority letters and large packages are part of a different class that offers faster delivery services. Government correspondence often uses first-class mail to ensure timely and reliable delivery of important documents. Registered mail, which offers proof of mailing and delivery, is categorized distinctly and is intended for valuable or important items. Thus, option B is the only one that accurately reflects the nature of third-class mail.