Question ID:PT60 S1 Q20 Passage:Historian:  Radio drama requires its listeners to think about what they hear, picturing for themselves such dramatic elements as characters' physical appearances and spatial relationships. Hence, while earlier generations, for whom radio drama was the dominant form of popular entertainment, regularly exercised their imaginations, today's generation of television viewers do so less frequently. Stem:Which one of the following is an assumption required by the historian's argument? Correct Answer Choice:DChoice A:People spend as much time watching television today as people spent listening to radio in radio's heyday. Choice B:The more familiar a form of popular entertainment becomes, the less likely its consumers are to exercise their imaginations. Choice C:Because it inhibits the development of creativity, television is a particularly undesirable form of popular entertainment. Choice D:For today's generation of television viewers, nothing fills the gap left by radio as a medium for exercising the imagination. Choice E:Television drama does not require its viewers to think about what they see.