When will the media's impact on public opinion be strongest?

a. when the public has a large amount of knowledge on a topic

b. when the public feels very strongly about a topic

c. when the topic discussed is part of people's everyday lives

d. when the media focuses on a story that is new to the public

Which answer best describes the u.s. national road? it ran from atlanta to baltimore and followed the railroad. it ran from new york to chicago and was made from wooden planks. it ran from massachusetts to ohio and ran parallel to the canal system. it ran from maryland to illinois and was made using macadam construction.