Determination about whether an individual is an Indian is made by:
a. The Federal Government’s Bureau of Indian Affairs, according to criteria set in the Indian Reorganization Act (IRA).
b. Individual tribes, who set an exact percentage or quantum of Indian blood as qualifying a person for membership.
c. Ascertaining whether an individual has any Indian ancestry—ancestry alone qualifies a person as an Indian.
d. The individual’s declaration that he or she is Indian.