Answer: COMPETITION
Explanation: According to conflict theorists, competition is a constant occurance in our day to day life, competition can arise from human relationship and interaction with each other.
And this occurs as a result of scarcity of resources including material resources like commodities, property and money.
Conflict theorists portrays social life as a competition which focuses on the distribution of resources, power, and inequality. Unlike functionalist theory, conflict theory is better at explaining social change, and weaker at explaining social stability.
Example of conflict theory is in a scenerio of a prison where the guards exert authority over prisoners through strict rules,the prisoners resent such rules and the guards for being hard on them.