Why is having pre-decided rules in a constitution useful for both government and citizens?

Correct answer: It keeps expectations and limits clear

Direct answer: A is correct. Pre-decided constitutional rules tell citizens what government institutions may do and tell governments what limits they must respect. This creates predictable expectations: citizens can know their rights and duties, while officials cannot simply change basic arrangements to suit themselves. Written rules also provide standards against which government action can be discussed or challenged. B is wrong because constitutional rules generally protect and define rights rather than end them. C is wrong because prior limits reduce arbitrary action. D is wrong because courts remain important for interpreting and enforcing constitutional rules. A is correct because clarity benefits both sides and supports stable government. Memory cue: agreed rules make power predictable, not unlimited.