Final answer:
Muckrakers contributed to the rise of Progressivism by exposing corruption in business and government and advocating for solutions.
Step-by-step explanation:
During the early years of the 20th century, muckrakers contributed to the rise of Progressivism by exposing widespread corruption in business and government. Unlike sensationalized journalists, muckrakers focused on uncovering social problems and advocating for solutions. They wrote articles and books that brought attention to issues such as child labor, anti-trust, and working and living conditions, which led to activism and legislative reforms.