The correct option reflects the fundamental role of a constitution in establishing the framework of governance, delineating the powers and functions of various government branches while ensuring checks and balances to prevent abuse of authority. This limit on governmental power is crucial for upholding the rule of law and protecting citizens' rights, promoting stability and accountability within the political system. In the context of UPSC Prelims, understanding this principle is vital as it underpins the mechanics of governance, highlighting the balance between authority and individual freedoms, which is central to the functioning of democratic societies.