The correct answer should be C) Businesses created new products as manufacturing became faster and cheaper.
This was a period of great cultural change and modernization and led to development of things like mass radio stations, automobiles, going to see the moving pictures, and similar things which turned the common life upside down. The youth was open to these new ideas and embraced them, and since the United States were the biggest manufacturer in the world it was so cheap and everyone participated in these novelties. Afterwards, the great depression hit and everything went downhill.