Ajay believes that in the u. s., power is concentrated among a small group of elites who are involved in a constant struggle to keep their power from the non-elites. ajay's beliefs are in line with

The correct answer is the conflict theory of political and economic systems. 

The conflict theory of political and economic systems is a theory which states that power and wealth lie in the hands of few members of society because there are limited resources available, and thus, constant competition to acquire these resources. Due to this, Ajay (who believes in the conflict theory of political and economic systems) would believe that power is concentrated among a small group of elites who are involved in a constant struggle to keep their power from the non-elites.