How Were the European Languages and Cultures Primarily Transmitted to Indigenous

How were the European languages and cultures primarily transmitted to indigenous populations?

A) enslavement and the use of the requiremento.
B) creating bicultural societies through interaction and assimilation.
C) conversion efforts by the Catholic church.
D) development of local schools and educational efforts by Spanish settlers.
E) there was strict separation of cultural and linguistic identities as a deliberate process of isolation.