The correct answer is A) Farmers struggled to find markets for their goods as prices began to drop.
World War I affected the economy of the United States and Oklahoma Farmers in that they struggled to find markets for their goods as prices began to drop.
Since the beginning of World War 1 in August 1914, people from Oklahoma were against the United States involvement. Most of the country agreed with the decision of the government to remain neutral in the European conflict. But Oklahomans in particular, heavily opposed because they knew the war could cause a negative effect to the economy of the US and the state. German navy blocked Allie's ports and closed off important European markets and agriculture exports decline as agriculture prices did it too.