The correct answer to this open question is the following.
Although you did not include a further reference on the date or historical context, neither options, we can comment on the following.
How would you explain the emphasis that farmers' political representatives placed on federal fiscal policy?
One of the contexts that probably you are referring to is what happened with the fiscal policy to help farmers after World War I. The federal government of the United States applied a fiscal policy of agriculture subsidy to help American Farmers to produce their crops. This fiscal policy was aimed to help US agriculture to gain momentum after a financial crisis, trying to help farmers to increase their income.
US Congress tried to help American Agriculture creating anti-trust legislation with laws such as the Packers and Stockyard Act of 1921.