Why can the roles of different institutions in a major policy decision be called checks and balances?

Correct answer: Because they monitor one another and help prevent arbitrary use of power

A is correct. Democratic institutions have different roles and can limit or review one another’s actions. For example, Parliament can debate policy and hold the government accountable, while courts can review whether government action is constitutional. These checks help prevent arbitrary use of power; they do not mean that all institutions do the same work.