Answer:
Ida Minerva Tarbell (1857 — 1944) was part of the “muckraker” investigative journalism, a group of progressives who used their exposés to further develop the progressive political debate.
Tarbell became well known for her The History of the Standard Oil Company, one of the most meticulous descriptions of the concentration of wealth and the growing power of trusts.
On the other hand, Theodore Roosevelt, although also preoccupied with the spread of trusts, was in the political side of progressivism. For example, Roosevelt activated the Sherman Antitrust Act of 1890, and became a national symbol and public advocate of progressivism.
Step-by-step explanation:
Progressivism applied reforms aimed to strengthen the national government to stop the irresponsible concentration of wealth and the growing power of enormous trusts, which endangered the right of the common people to make a fair living.