Final answer:
Flappers were the progressive young women of the 1920s who challenged traditional gender norms by adopting new fashions, behaviors, and attitudes, and thus the correct answer is b) Flappers.
Step-by-step explanation:
The young women who rebelled against traditional ways of thinking and acting during the post-World War I era were known as flappers. These women sought to express their independence from the restrictive Victorian gender norms by engaging in new fashions and lifestyles. Flappers wore shorter skirts, had bobbed hair, applied more makeup, and adopted behaviors such as smoking and drinking, which were previously seen as unfeminine. They displayed a new form of social freedom that challenged the status quo and ultimately played a significant role in the evolution of women's rights. Therefore, the correct answer to the question is: b) Flappers.