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Answer:
In the early 20th century, the period between childhood and adulthood was ... time middle-class teenagers had in the postwar years, compared to earlier times?
Explanation
so i would say b
The major difference between teenagers in the postwar period and in earlier times is;
- B. Postwar teens were a major target group of businesses
After World War II which lasted between 1939 to 1945, the set of children that were given birth to between the 1950s and 1960s were known as the baby boomers.
At this time period, the economy of the American nation was thriving. There was a lot of money at the disposal of these teenagers, thus making them a target for major business marketers.
Also, with the advent of television in the 1950s and new music genres like Rock and Roll, the American youths were forming their identities and rebelling from the status quo.
Summarily, the difference between teenagers in the postwar period and in earlier times was that the postwar teens were a major target group of businesses.
Learn more about postwar teens here:
https://brainly.com/question/11955640