During the Progressive Era, journalists known as "muckrakers" often investigated and exposed social problems, political corruption, and corporate abuses. Their work primarily led to increased public awareness and support for which type of reforms?

✓ Correct Answer: Option B

Muckrakers' investigations, such as Upton Sinclair's "The Jungle," exposed issues like unsanitary conditions and corruption, galvanizing public opinion and pushing for significant social, economic, and political reforms during the Progressive Era.