Progressive era reformers tried to reduce the gap in wealth between the rich and the poor by (1) creating the federal reserve system (2) giving voters the power of referendum and recall (3) implementing a graduated income tax (4) establishing the federal trade commission

The implementation of graduated income tax had become the solution to decrease the gap of the wealth between the poor and the rich. This was done by the progressive era reformers. In the graduated income tax, those taxpayers who are earning more should also pay more taxes. The answer is option 3.

Every statement this is because of the same law