Because there is no table provided, let me enumerate the various methods of proposing changes to the constitution.
two-third of two congress houses vote a proposal to change the constitution
two third of the state legislature can ask congress to call for national convention to deliberate on the change.
The answer is c they learned how to grow food and survive from the american indians
A letter to a congressman- Inputa picket line of union members demanding new rules- Input a Veteran's Day parade voting a tax increase a new super highway- Inputa law against frisbees- Outputa parent-teacher resolution to ask the state for new books- Input.
Requests/demonstrations = input.Laws and responses from the government are outputs.