What role did radio play in the 1920s being dubbed the roaring twenties in popular culture?

a. mass communication tools such as radio caused massive shifts in culture and politics.
b. radio helped warren g. harding win a presidency that would become known for radical changes in the form of government.
c. radio helped people organize protests during this period.
d. the first radios were very loud and could be heard from the streets, leading many to refer to the 1920s as the roaring twenties