During the 1920s, farmers received lower prices for their crops than they did during World War I. Why? A. The government regulated interstate commerce. B. The Federal Reserve inflated the money supply. C. Farmers overproduced farm crops. D. Foreigners increased purchases of American produce.

By overproducing certain crops

C. Farmers overproducing farm crops

Explanation:

During the 1920's, the agricultural sector in the United States was over-producing crops for several years in a row. The farmers had their intentions to supply the US market in total, but also to have enormous amounts for export, thus to earn much more money. That actually turned to backfire, as they actually produced much more than what the US market demanded, and what was demanded for export. The prices went significantly down, so instead of profit, the farmers recorded losses. The economy crumbled because of this too, with big inflation emerging, and very big economic downfall, with the end result being the Great Depression.