Passage Summary: TV talk shows don't feature extreme political views because stations are businesses that need huge audiences, and they believe that safe, boring content is the only way to get everyone to watch.

Conclusion: The rarity of non-mainstream political opinions on television is a result of economic pressures rather than the political agendas of the stations.

Reasoning: Television stations must maximize their audience size to survive economically, leading them to air only content that appeals to the largest possible number of people.

Analysis: The author is trying to replace one explanation (political agenda) with another (economics). For this economic explanation to work, there must be a link between what a large audience wants and the 'bland' content being produced. The author assumes that non-mainstream or 'outside the mainstream' opinions do not have the potential to attract a large audience. If thousands of people were actually clamoring for radical political talk, the stations' economic drive would lead them to air it, regardless of how 'bland' it is. Look for an answer that addresses this gap between audience size and the type of political content.