Factors That Contributed to the Current Level of the Earnings

Factors that contributed to the current level of the earnings gap in the U.S. labor market between black and white workers include:

A) the combination of changes in law and changes in social attitudes
B) changes in production techniques made white workers unproductive
C) a large decline in the average education levels for white workers
D) a vast increase in the number of well-educated black workers and a