A system of government in which the ruler is a religious figure or is backed by a religion is a ​

A) tyranny.
B) oligarchy.
C) aristocracy.
D) theocracy.

A theocracy is a system of government in which the ruler is a religious figure or is backed by a religion. In this form of government, the laws and decisions are often based on religious beliefs and principles. Examples of theocratic governments include Iran, Saudi Arabia, and Vatican City.