Question

what methods did progressive reformers use to address social problems? (select the three correct answers.) (1 point) corporate sponsorship military intervention religious missionary work grassroots activism government regulation investigative journalism

Explanation:

Progressive reformers (early 20th century U.S.) used grassroots activism to mobilize public support for change, pushed for government regulation to curb corporate excesses and protect workers/consumers, and relied on investigative journalism ("muckraking") to expose social injustices and corruption—all core methods of the movement. Corporate sponsorship, military intervention, and religious missionary work were not central to their approach.

Answer:

Grassroots activism, Government regulation, Investigative journalism