Prior to the 1950s and 1960s, Most Radio Listening Occurred

Multiple Choice

Prior to the 1950s and 1960s, most radio listening occurred in the home because ______.

A) people didn't have televisions yet
B) radio sets before the invention of transistors used bulky and delicate vacuum tubes
C) automobiles weren't really widespread yet so most people couldn't leave home
D) radio programs used to be longer and required people's undivided attention
E) None of the above options is correct.