what new form of entertainment helped to popularize ragtime and jazz in the early 1900s?\ntelevision\ntalkies…

Brief Explanations:

In the early 1900s, radio became a new form of entertainment that could widely broadcast ragtime and jazz music to a large audience. Television was not widespread then. "Talkies" (sound - films) emerged later in the 1920s. Opera is an older form and not a new form of entertainment for popularizing these music styles in the early 1900s.

Answer:

C. radio