Answer:
C) They charged high shipping rates for getting farm products to market.
Step-by-step explanation:
Farmers' Alliance was an American agrarian economic movement created by the farmers living and farming in the United States of America during the 1870s and 1880s. The Farmers' Alliance was aimed and focused on improving the economic conditions for all American farmers to grow, develop and flourish excellently through the establishment of cooperatives and political advocacy groups.
Basically, the Farmers' Alliance believed majority of the economic problem and challenges was caused by industrial monopolies, eastern bank and railroads.
The railroad monopolies hurt American farmers because they were extorting the farmers by way of charging high shipping rates to transport their farm products to the market.
Hence, the Farmers' Alliance was formed so as to break the economic grip considered to be caused by the railroad monopolies, through the establishment of farmers' cooperatives.