Who were muckrakers? immigrants that wanted to raise awareness of unsafe conditions in cities journalists who raised awareness about problems with businesses and politicians people who fought for the rights of former enslaved persons government officials that wanted to raise awareness about unequal rights

Journalists who raised awareness with businesses and politicians

Explanation:

Famous Mudracker Upton Sinclair wrote a book called The Jungle that detailed the disgusting work environment that meatpackers would deal with. (Seriously it's absolutely revolting). This exposed the meatpacking industry to the public and regulations were put in place in the outcry. Mudracker is slang for "people who dig deep into facts."