The correct answer is C. Mass media gained more influence.
Step-by-step explanation
According to the information in the graph, it is evident that during the 1920s there were positive changes in the appearance of the mass media (media received by a large population for example tv, radio, magazine, diary, newspaper, among others) because the circulation of newspaper, the number of households with radios, and the number of people attending motion pictures increased during this decade. According to the above, the correct answer is C. Mass media gained more influence because they grew during this decade.