Question

a muckraker was a reporter who wrote
about corruption and crime in industry and government.
fictional stories for newspapers and magazines.
about the importance of the first amendment.
editorials supporting industry leaders and big business practices.

Explanation:

Muckrakers were journalists in the Progressive Era who exposed corruption, crime, and unethical practices in industry and government. The other options are incorrect: muckrakers wrote non - fictional exposés (not fictional stories), their focus wasn't the First Amendment, and they criticized, not supported, industry leaders and big business practices.

Answer:

A. about corruption and crime in industry and government.