Concept:Constitutionalism is the principle that government power must be limited by the constitution.Explanation:The constitution is the supreme body of fundamental laws of a state.Constitutionalism demands that the powers of government be clearly defined and restricted by these laws.Every action of the government and its officials must conform to the provisions of the constitution.Thus, constitutionalism means operating strictly in line with constitutional rules.Answer:D. strict adherence to a constitution.