Final answer:
An O Muckraker is a journalist who exposes abuses in American society.
Step-by-step explanation:
An O Muckraker is the term given to a journalist who exposes the abuses in American society. The muckrakers were investigative journalists and writers in the late 19th and early 20th centuries who aimed to bring attention to social issues and corruption. They played a significant role in raising awareness and prompting needed reforms in areas such as labor conditions, political corruption, and social inequality.
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