D. Progressivism is a political philosophy and reform movement that emerged in the United States in the late 19th and early 20th centuries. It aimed to address social and economic problems caused by industrialization, urbanization, and immigration by using politics and government to improve conditions for citizens.
Progressives sought to promote social justice, strengthen democracy, and create a more efficient and responsive government. They supported a wide range of reforms, including labor protections, women's suffrage, consumer protection, and regulation of big business.