Correct Option: A

A republic is a form of government in which the country is considered a “public matter” (Latin: res publica), not the private concern or property of the rulers, and where offices of states are subsequently directly or indirectly elected or appointed rather than inherited. In modern times, a common simplified definition of a republic is a government where the head of state is not a monarch. In modern republics such as the United States and India, the executive is legitimized both by a constitution and by popular suffrage. Montesquieu included both democracies, where all the people have a share in rule, and aristocracies or oligarchies, where only some of the people rule, as republican forms of government