Which of the following best defines a Network Affiliate?

A network affiliate is best defined as a local station that has a contractual relationship with a larger television network. This relationship allows the affiliate to broadcast the network's programming, which typically includes popular shows, sports, and other content. In return, the network provides assistance in terms of marketing, resources, and sometimes shared programming costs, while the local station retains the right to air its own locally produced content and shows outside of the network's schedule.

Other options do not accurately reflect the nature of network affiliates. A local station with no programming would not be able to operate effectively as an affiliate, since they require content to broadcast. A station that airs only news would not represent a full network affiliate, as such a focus would limit its ability to present a variety of programming. Lastly, a national public service broadcaster is distinct from a network affiliate, as it serves a different purpose and structure in delivering content to the public, usually funded by the government rather than through commercial contracts with affiliates.