What is a CPU that provides postal services in small communities where an independent post office has been discontinued?

The correct choice is a Community Post Office. A Community Post Office is specifically designed to serve small communities, particularly in cases where an independent post office has been closed. This type of facility allows local residents to access essential postal services, ensuring that even in areas where traditional post offices are no longer operational, there is still a means for receiving and sending mail.

Community Post Offices are often located in convenient places, such as local businesses or community hubs, making services accessible to residents. This is vital for maintaining postal service accessibility in rural or less populated areas. Each of the other options represents different types of postal facilities, but none specifically refers to the service model catering to the needs of small communities left without a standalone post office.