Which of the following best states the central idea of this passage?
There were many developments in science and technology during the 1920s but they were not recognized at the time because America was too wrapped up in pop culture.
There were many developments in science and technology that helped to improve the quality of life for the people of the 1920s and for people today.
There were many labor-saving advancements in technology that made household work easier during the 1920s.
Two major developments in medicine, penicillin and insulin, helped to save the lives of millions of people during the 1920s.
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