Final answer:
Early radio listening habits in the 1920s involved tuning into sponsored news programs, radio dramas, and comedy shows, with nearly 83 percent of homes owning a radio by 1940. The radio created a communal culture as people gathered to listen and discuss programs, marking the "Golden Age" of radio by the late 1930s.
Step-by-step explanation:
In the early 1920s, radio listening habits began to form as the medium emerged as a source of both news and entertainment. With the inception of commercial networks such as the National Broadcasting Company (NBC) and the Columbia Broadcasting System (CBS), sponsored news programs and radio dramas gained popularity. Comedy programs like Amos 'n' Andy and The Adventures of Gracie, as well as religious shows, talk shows, educational programs, and eventually game and quiz shows, broadened radio's appeal.
By the late 1930s, the "Golden Age" of radio had been reached, where four out of every five American households owned a radio, and a communal culture evolved around listening to popular programs and discussing them in various social settings.