What term defines rule by a few?

The term that defines rule by a few is "aristocracy." In an aristocracy, power is held by a small group of privileged individuals, often based on hereditary titles, social class, or wealth. This form of governance contrasts with democracy, where power is vested in the general population, allowing for broader participation in political decision-making. Monarchy refers to a system where a single ruler, such as a king or queen, has significant control, while autocracy signifies rule by one individual with absolute power, often without the consent of the governed. Aristocracy specifically highlights the governance by a select elite, making it the correct choice in this context.