Final answer:
The word 'polluted' means corrupted.
Step-by-step explanation:
In this sentence, the word 'polluted' means corrupted. It implies that too much of cable news is affected or influenced negatively by partisanship, resulting in a biased and unreliable information source. The word 'polluted' suggests that the content is tainted or contaminated by the agenda or bias of the shows, rather than being objective and impartial.
Learn more about Definition of the word 'polluted' in the given sentence