The correct answer is to Promote cultural assimilation
Explanation:
In the first photograph, children at the Carlie Indian School are wearing traditional Native American clothes, and boys have long hair, which was considered as normal in Native American Tribes. These features disappeared in the second photo because in this, boys have short hair and all the children are wearing similar clothes. Moreover, these clothes do not resemble the tribe's clothes but Europeans or colonizers' clothes.
This shows the children have acquired values, ideas, practices, etc. of colonizers, while forgetting about traditional values, ideas, practices, etc. This process is known as cultural assimilation and implies minorities adapt to the main culture by adopting cultural elements of this culture.