The correct answer is C. People generally watch, listen, and read sources that agree with their own viewpoints.
Step-by-step explanation:
Politicians including candidates often use media to influence the attitudes of electors; this includes showing positive images about themselves, their proposals and their party or using media to explain electors they should vote for them. However, in some cases, this influence is limited as electors tend to select specific sources that are similar to their viewpoints; this implies electors decide to be exposed to only certain viewpoints and types of media, and therefore candidates that do not fit in these cannot influence electors. Thus, one limit of media's influence on public attitudes about politics is "People generally watch, listen, and read sources that agree with their own viewpoints".