Final answer:
The national media is biased and can shape the audience's views and opinions.
Step-by-step explanation:
The national media can be considered a good overview source that is biased. Media coverage, such as that provided by national television media outlets, has a significant impact on how Americans perceive and understand local, national, and international events. The media acts as a gatekeeper, selecting which stories to cover and how they are presented. This can lead to bias in the news coverage, shaping the audience's views and opinions.