All of the following were part of the Populist Party's program except

Aa flat income tax—everyone pays the same rate or percentage
Bdirect election of U.S. senators by the people, not by state legislatures
Cprotection against consumer fraud
Dmore government loans for farmers

Verified Answer :

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 Populists were in favor of an income tax that was relative to a person's income. 

a. a flat income tax—everyone pays the same rate or percentage