Answer:
D. To make laws and initiate constitutional amendments.
Explanation:
In the United States Native Americans have the right to settle their own governments as a form of self-sovereignty, this governments are called Tribal Government, and they are composed by a Governor or President, a Tribal Council that acts as the legislative body, so the main role of the tribal council is to make laws (tribal codes) and initiate constitutional amendments (tribes have their own constitutions that respect the United States Constitution), and a tribal court system that maintains justice.
