The correct answer is C) Progressives.
The group that most supported the political changes described in the excerpt above were the Progressives.
Indeed, Woodrow Wilson himself was considered to be one of the most important names of the progressive era in the United States. He was the 28th President of the United States. He always stated that he was a President that was the representative of the American citizens. His progressive ideas impacted people and regarding foreign policy, he always defended the policy of neutrality and avoided enter World War 1, until the sinking of the Lusitania ship and the interception of the Zimme}man telegraph made him ask Congress for a declaration of war against Germany.