Farmers' cooperatives were most common among:
a. fruit growers in the west.
b. tobacco growers in the middle atlantic.
c. cotton producers in the south.
d. grain producers on the plains.

Farmers cooperatives were most common among the fruit growers in the west. They are usually formed as a way to help generate profits for the farmers. Today there are about 40,000 of them in existence in the United States. The largest of them is CHS Inc. located in Inver Grove Heights, Minnesota.