Karl Marx, Emile Durkheim, and Max Weber, all shared an interest in: 

a. bringing about revolutions that would bring down capitalist economic systems. 

b. developing theories to account for the tremendous changes that had recently occurred across European societies.

c. collecting large sets of data restricted to social conditions at that point in time. 

d. doing survey research that would help to bring about social improvement. 

e. none of the above