Given that Direct Democracy is a form of governance or democracy in which the citizens of a country or nations who are eligible to votes, votes directly in deciding on the governmental policy of that particular country.
Hence, in this case, where Every citizen who is eligible to vote has a chance to have their say. Citizens rule directly, not through representatives is a form of DIRECT DEMOCRACY.
They should analyze and see if they have enough resources to produce more corn, they should also make a plan on what to do and how to use their resources effectively in order to produce the highest amount of corn. The answer would be A!