Answer:
C) The schools were intended to diffuse christianity and assimilate indigenous youth into European culture
Step-by-step explanation:
The best explanation in the practice of placing indigenous children in boarding schools in the late nineteenth and early twentieth centuries was to ensure that the schools diffused christianity and assimilated indigenous youth into European culture.
During this period Christianity as a religion was widely accepted which led to its gradual assimilation into the cultural aspect of the people.