Social Attitudes and Beliefs Are Usually More Liberal Among Younger

Social attitudes and beliefs are usually more liberal among younger generations. The relationship between generation and beliefs about racial inequality among African Americans is the exception to this pattern. Which of the following explanations has NOT been cited as a potential reason for generational differences in beliefs about the causes of racial inequality among African Americans?

A) decreases in racial discrimination within this society
B) decreases in young Blacks' sensitivity to discrimination
C) increases in drug use among African Americans
D) increases in the amount of time that has elapsed since the civil rights movement, which mobilized Blacks and increased their solidarity
E) increases in the degree of variation in socioeconomic resources among the Black population