Which of the Following Is Primary Assimilation

Which of the following is primary assimilation?

A) Racial and ethnic groups maintain their distinctiveness but respect each other and have equal access to social resources.
B) Members of different groups are integrated in personal, intimate associations, as with friends, family, and spouses.
C) Groups become integrated in public areas and in social institutions, such as neighborhoods, schools, and the workplace.
D) A person adopts the culture of a group different from the one in which the person was originally raised.