Which Statement Best Synthesizes the Historical Significance of the Rise

Which statement best synthesizes the historical significance of the rise of modern advertising in the 1920s?

A) It promoted a therapeutic ethic, suggesting that consumption could contribute to physical and emotional well-being.
B) It informed Americans about the new range of products available to them and the benefits they could hope to obtain from them.
C) Advertising prompted the creation of modern radio networks that would soon crowd out small niche-market competitors.
D) Advertising created the mass markets that allowed for economies of scale through which consumer goods became much cheaper for Americans.