The 1940s and 1950s are considered the Golden Age of television due to high quality programming and ...

The 1940s and 1950s are considered the Golden Age of television due to high quality programming and lack of syndication. Which of these prestigious genres became prominent in these early days of radio broadcasting but nearly disappeared in subsequent decades?
 
  a. drama anthologies that often attempted to create dialogues around important issues of the day
  b. crime programs that actively involved the viewer in the action of the story
  c. music and theater productions that were aired with no commercial interruptions
  d. comedic variety shows