According to Stanley Lieberson's Research on the Unequal Levels of Success

Multiple Choice

According to Stanley Lieberson's research on the unequal levels of success different immigrant groups have attained in the United States, one primary factor contributing to the group's success is:

A) The aspirations of group members to get an education
B) The motivations of group members to get a job
C) The language skills of the group
D) Whether the groups were voluntary or involuntary immigrants