Option (C) is correct because the constitution does not ensure that good people come to power. The context clearly outlines three main functions of a constitution: (1) providing basic rules for minimal coordination in society, (2) specifying who has the power to make decisions and how the government will be constituted, and (3) setting limits on what a government can impose on citizens to protect their fundamental rights. Options (A), (B), and (D) align with these functions - guaranteeing rights relates to limiting government power, marking out spheres of power relates to constituting the government, and expressing shared values relates to national identity. However, ensuring that 'good people' come to power is not mentioned anywhere as a constitutional function. The constitution provides the framework and procedures for governance but cannot guarantee the moral character of those elected to power.