Which group would have been most likely to support the ratification of the sixteenth amendment to the u. s. constitution?

Progressives

Explanation:

The 16th Amendment is the Amendment that allows Congress to legalize an income tax that would vary on the income of an individual or corporation. Many businesses and wealthy individuals did not enjoy the new taxation because since they had more money, they would tax more than others. But the 16th Amendment was a result of the Progressive Era that aimed to make a series of reforms.

answer; the best answer is (demand);