Sociologists who focus on how practical constraints and opportunities can or hinder a social movement are using: relative deprivation theory. resource mobilization theory. technological determinism. activist politics. reactionary theory.

The answer to this question is the "resource mobilization theory" which is the third item from the choices. Sociologists who focus on how practical constraints and opportunities can help or hinder a social movement are using resource mobilization theory. They are discussing the idea that success depends on the availability of the resources such as time, money and skills and how to use these resources.