Final answer:
Women in the 1920s received greater support for suffrage due to their indispensable contributions during World War I and increased engagement in education, and political activism. These efforts, coupled with decades of suffrage campaigning, led to the passing of the Nineteenth Amendment, granting women the right to vote. So, the correct answer is option b.
Step-by-step explanation:
The reason for the greater support of suffrage and less discrimination against women in the 1920s can be attributed to their significant contributions during World War I, where women effectively filled the jobs of men who went to fight in the war. Their efforts during this period showcased their capabilities and challenged prevailing gender norms, which subsequently led to increased public support for women's rights, including the right to vote.
Moreover, the evolution of education for women throughout the early 20th century played a foundational role in the suffrage movement. By the 1920s, women had begun to attend college in comparable numbers to men and were nearly as likely to graduate.
As women became more educated and active in various political and social causes, including the Women's Christian Temperance Union and the National Association of Colored Women's Clubs, their activism and increased presence in public life further fueled the drive for suffrage.
These developments, along with the formation of organizations such as the National American Woman Suffrage Association (NAWSA) and their persistent campaigning efforts, culminated in the significant landmark victory of the Nineteenth Amendment in 1920, which enshrined the right to vote for women nationally.