Which is the best example of the need for a constitution?

Correct answer: All institutions work according to fixed rules and rights

Direct answer: D is correct—the need for a constitution is shown by the fact that institutions must work within fixed rules and respect citizens’ rights. Government decisions affect everyone, so public power cannot depend only on the changing wishes of office-holders. A constitution establishes the basic structure of institutions, distributes powers, sets limits, and protects rights. This creates predictability: citizens and institutions can know what procedures apply and who may take which decision. A is wrong because allowing the government to change rights at will is precisely the kind of arbitrary power a constitution seeks to prevent. B is wrong because lack of legal knowledge is a problem, not an example of constitutional protection. C is wrong because institutions without rules may misuse power and conflict with one another. D wins because it combines two central purposes of a constitution: regulating institutions and protecting rights. Memory cue: constitution means power with rules, not power by personal wish.