The correct answer is C. Majorities are required to pass new laws in the House of Representatives and the Senate. In the Iroquois League, all representatives must vote in favor of new policy for it to be implemented. This is known as a CONSENSUS vote.
The consensus voting system is a decision process that seeks not only the agreement of the majority of the participants, but also pursues the objective of resolving or mitigating the objections of the minority to reach the most satisfactory decision.