Answer:
The idea that the government had some role to play in maintaining the market had become firmly established, is the right answer.
Step-by-step explanation:
Although Progressivism brought about higher productivity to the government, set a more balanced playing range for business, and expanded the political power of common residents, the greatest collapse of the Progressive Era was its exclusive essence. The Jim Crow era which is known for intense discrimination and segregation of African Americans went together this time. Therefore, it may be said that though the Progressive reforms failed due to its nature but the idea that the state had some role to execute in managing the market became strongly established.