Which would not be an example of mass media?

a radio network
a television network
a newspaper
publication companies
printing companies
advertising agencies
magazines
all of the above are examples of mass media.

All of the above are examples of mass media.

Explanation:

Mass media are several different technologies that impact a large audience via mass communication. These technologies can take place in a variety of outlets and different forms of communication (audio, visual, written, etc.). Advertising is also considered mass media as it can have dedicated outlets that reach huge amounts of people.

The companies that control these technologies are also considered as part of the mass media.