One of the beliefs of the populist party was

One of the beliefs of the Populist party was D. THE NEED FOR COINAGE OF SILVER MONEY.
Populist Party were formed by farmers who were greatly affected by the introduction of the Industrial Revolution.
Farmers sold their crops to middlemen at a price which they believe are not sufficient to augment their daily expenses.
Populist Party wanted the some of following government actions:1) free coinage of silver2) graduated income taxes3) abolition of national banks4) non-ownership of lands by foreigners5) plenty of paper money and many more.
 

they formed voluntary organizations to remedy issues of debt, marketing, and lack of credit.