What Role Did Helen Hunt Jackson Play in Lobbying for Indian

What role did Helen Hunt Jackson play in lobbying for Indian rights?

A) She was an early advocate for reform of federal Indian policies and practices, particularly the reservation system.
B) She promoted the Ghost Dance movement as a way that Indians could preserve their cultural and religious practices.
C) She carried out a number of seminal anthropological studies of Indian societies.
D) She established the first Indian school in the East to educate Indian children and assimilate them into white society.