According to the Text,which of the Following Is an Example

According to the text,which of the following is an example of discrimination against Aboriginal families that occurred in the past?

A) Missionaries tried to stamp out Kwakiutl marriage practices.
B) Aboriginal children were prevented from accessing traditional school systems.
C) Social workers thought that Cree child-rearing methods were less effective than Ojibway parenting approaches.
D) Welfare workers encouraged relatives to be foster parents because the relatives knew the culture.