What role did muckrakers such as lda Tarbell and Upton Sinclair play? They were members of political machines.
They supported changes in farming methods.
They based their writings on unsupported opinions.
They exposed corruption in business and government.

They exposed corruption in business and government

your answer is a hope this

the answer you are looking for is letter c. he supported the idea of a un-run war in serbia to bring peace to the area.

supporting this idea was an important step that bill clinton took in order to attempt to secure bosnia and keep the peace there. he led peace reconciliations -known as the dayton agreement- leaving bosnia as a single state made up of two parts with one central government.