Societies ruled by the wealthy are

A) aristocracies.
B) oligarchies.
C) plutocracies.
D) monarchies.

A plutocracy is a society in which the wealthy hold the most power and influence, often due to their control of economic resources. While aristocracies and monarchies also involve privileged classes, they may not necessarily be defined by wealth alone, and oligarchies can refer to any small group that holds disproportionate power, not just the wealthy.