How does consuming public broadcasting affect one's political knowledge?

 1  Group of answer choices Americans who primarily rely on public broadcasting for their news tend to have lower levels of political knowledge.

2 There is no significant difference in the levels of political knowledge between those relying on public broadcasting outlets for their news and those relying on other sources.

3  Americans who frequently rely on public broadcasting outlets for their news have higher levels of political knowledge.

4 Although it used to be the case that Americans relying on public broadcasting outlets had higher levels of political knowledge, the proliferation of social media has changed this relationship so there is no longer a difference.