Question

All of the following were part of the Populist Party's program except
a. a flat income tax—everyone pays the same rate or percentage
b. direct election of U.S. senators by the people, not by state legislatures
c. protection against consumer fraud
d. more government loans for farmers

Answer 1

All of the following were part of the Populist Party's program except "a. a flat income tax—everyone pays the same rate or percentage," since the Progressives were in favor of a "Progressive Tax" system that would have taxed higher earners more heavily. 

Answer 2

the answer is A. a flat income tax-everyone pays the same rate or percentage