The correct answer is A) falling food prices.
The postwar period was difficult for farmers because of falling food prices.
After the war, the government couldn't guarantee the food prices and the prices fell. After World War 1, Farmers were producing more but earned less. And this represented an economic hurdle for farmers. That was the reason American farmers faced economic problems due to overproduction. This represented 10 years of difficulties for the people who worked in the fields.
