The correct answer is They provide a way of organizing and resolving political conflict
In the nineteenth century Benjamin Constant conceived political parties as a gathering of men professing the same political doctrine. In the twentieth century, several authors such as Max Weber, Nawiasky, Kelsen, Goguel, Burdeau, and many others have created theories that, respecting differences, conceptualized political parties are the union of people, of society; they are the formation of groups with similar, organized political ideals that aim to participate in political life, shaping and effectivelying a particular power.