The correct option is C
The social contract, as a political theory, explains, among other things, the origin and purpose of the State and of human rights. The essence of the theory (whose best known formulation is that proposed by Jean-Jacques Rousseau) is the following: to live in society, human beings agree to an implicit social contract that gives them certain rights in exchange for abandoning the freedom of which would have in a state of nature. Thus, the rights and duties of individuals constitute the clauses of the social contract, while the State is the entity created to enforce the contract. In the same way, human beings can change the terms of the contract if they wish; The rights and duties are not immutable or natural. On the other hand, a greater number of rights implies greater duties, and fewer rights, less duties.