One Cause of Poverty After 1945 Was That

One cause of poverty after 1945 was that

A) the percentage of the population with disabling mental, physical, or emotional conditions increased dramatically.
B) white racism became increasingly entrenched in both the North and the South.
C) many white ethnic groups in America were traditionally opposed to wage labor.
D) technological advancements raised job requirements and made it harder for those without educational or special skills to earn a living.