The spread of 24 hour networks during the 1980s and 1990s made the american public more aware of which of these -government intrusion
-tobacco dangers
-humanitarian crisises
-global warming

Twenty-four-hour cable news had an instant appeal with the American public and a dramatic impact on the nightly network ... the three broadcast networks as the most believable TV news source, an honor it has held for more than a decade. The second half of the 1980s and the second half of the 1990s.

Government Intrusion.

Explanation:

true is the answer to this