Final answer:
The problems of the Gilded Age led to the gains of Progressive policies, such as addressing social ills, regulating monopolies and trusts, and reforming political machines.
Step-by-step explanation:
The problems of the Gilded Age led to the gains of Progressive policies in several ways. (A) Progressives were alarmed by the spread of slums, poverty, and the exploitation of labor. They sought to address these social ills and improve the living conditions of the working class. (B) Progressives were also concerned about the growing power of monopolies and trusts, which they believed were contributing to economic inequality and stifling competition. They advocated for legislation to regulate these big businesses. (C) Additionally, Progressives were upset with the corruption of political machines, which controlled many city governments. They pushed for political reforms to increase transparency and accountability.