Answer: B) social contract theory
Explanation: Social contract theory is the theory that states about people living in a society along with the settlement in political system and morality. It helps the society to function smoothly as the behavior and morals are agreed upon by every party.
The situation mentioned in the question states about the social contract theory under which the government and people are agreeing to settle and sacrifice their power.
Other options are incorrect because force theory is for force, pluralism theory and king's theory of divine right are not concerned with settlement.Thus, the correct option is option(B).