Which statement best explains the relationship between new forms of entertainment in the 1920s and the fads of the era?

Radio and film could reach large audiences, so they helped popularize the latest styles, dances, and activities of the 1920s. This makes “the availability of radio and film helped spread the word about new fads” the best explanation of their relationship. The other choices either claim entertainment itself was a fad or make an unsupported connection between radio and the end of rebellion.

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