If a disease infects and destroys a large amount of the nation's supply of corn, what is likely to happen to the price of corn?

Increase in prices.

Explanation:

As the agricultural policy set the laws related to the domestic imports and exports of the products to achieve a specif outcome of the market thus as the crops get destroyed due to the diseases or floods etc, there will be limited supply and demands of that commodity and will lead to the rise of the price rise and increase of imports

The price of corn would increase since there is now a limited amount of corn.