United States History Question of the Day

Ida Tarbell, a muckraking
journalist of the Progressive Era
(Source: Wikimedia
Commons--public domain)
Question 0911:
Muckraking writers of the Progressive Era exposed
(A) unsafe meat packaging
(B) corruption in city government
(C) unhealthy mining conditions
(D) the anti-competition tactics
of trusts
(E) all of the above