The Role of the Media in Performing Its Gatekeeping Function

The role of the media in performing its gatekeeping function is an issue of concern because the media

A) act as their own guardians, open to no serious challenge in this role.
B) have a strong liberal bias in its selection of stories.
C) too often defer to the party in control of the Congress.
D) show little concern for popular opinion.
E) do all of the above.