The correct answer is A. audiences for popular music shifted from radio to television
Explanation:
In 1948 the radio reached its peak in relation to financial success. However, after 1948, national media dominated by network radio succumbed from 46% in 1945 to 25% in 1952. In the late 1950s, most radio stations disengaged from networks, switching to cheaper programs. Thus, the radio was transformed from a national to a local advertising medium, and its centrality in american popular culture was quickly occulted by television.
If Robin wants to start a business in a market economy, his or her main concern should regard what consumers want, for in a market economy, consumers dictate supply and demand.