What are channels that reach large audiences, such as national newspapers and television, referred to as?

The term that describes channels which reach large audiences, such as national newspapers and television, is "mass media." Mass media encompasses platforms that disseminate information to a large number of people simultaneously, making it effective for reaching broad audiences with general messages. This is particularly important for campaigns aiming to create widespread awareness or influence public opinion, as mass media allows for the rapid distribution of content across wide geographic areas.

In contrast, other types of media, such as niche media, target specific segments of the audience based on particular interests or demographics, which do not allow for the same level of broad reach. Targeted media focuses on reaching specific groups based on defined criteria, while local media emphasizes coverage in confined geographical areas, which also limits the audience size compared to mass media. Thus, mass media remains the most suitable choice for channels that aim to communicate with very large audiences.