Question

please select the word from the list that best fits the definition
the theory that people join social movements because they feel deprived relative to other people or groups with whom they identify.
reactionary movement
social movement
revolutionary movement
relative deprivation theory
resource mobilization theory

Explanation:

The definition mentions "feel deprived relative to other people or groups", which directly relates to the term "relative deprivation theory".

Answer:

relative deprivation theory