The best answer to how the women's suffrage movement impacted the United States is:
C. Government became more representative of the nation's population.
The women's suffrage movement led to women gaining the right to vote through the 19th Amendment in 1920, which allowed for a more inclusive and representative democratic process in the country. This change enabled women's voices and perspectives to be heard in politics and policy-making, thus contributing to a government that better reflected the diversity of the population.