Sagot :
the one that became popular new form of entertainment in America during the 1920s is : B. Dance halls
Back then , Many clubs in the united states held a Dance contest with prize money on the line. While The youngsters in our generation tend to rely on online app to hooked up, Dance club was a medium for the Youngsters to do it in the 1920sHope this helps. Let me know if you need additional help!