Question

what was the result of the investigative journalism that uncovered corruption and scandal in business and government?
newspaper circulation increased but little else happened.
government investigations and regulatory reforms were implemented.
urban governments hired reporters to look for corruption.
reporters like jacob riis and david graham phillips were elected to congress.

Explanation:

Investigative journalism exposing business and government corruption (such as muckraking in the Progressive Era) typically prompted official government inquiries to address the uncovered misconduct, and led to new rules/regulations to prevent future corruption. The other options are incorrect: circulation gains alone did not characterize the main impact, governments did not hire reporters for this purpose, and these journalists were not elected to Congress.

Answer:

Government investigations and regulatory reforms were implemented.