Answer:
C. using only gold for currency was not a plank of the populist platform
Step-by-step explanation:
The major role of the party was to develop a platform for free coinage and abolish the banks and other schemes that were connected with income tax. Therefore plenty of government activities were to be directed to people to decide the leaders. Foreigners were also not required to own any land, the working hours were changes and there was revision of the contracts of law for immigration reforms.
Therefore the goal of the populist was to abolish the democrats which were the second party nationally.