Karl Marx Recognized, and Some Contemporary Sociologists Agree, That a Major

Karl Marx recognized, and some contemporary sociologists agree, that a major factor in social movements is

A) absolute deprivation of goods and services.
B) a feeling that there is a gap between what one has and what one expects and feels to be one's right.
C) periods of economic decline followed by upturns.
D) getting leadership out of the hands of the intelligentsia and into the hands of the common people.