Answer:
Option D.
Step-by-step explanation:
Rule by a single leader with unrestrained power, is the right answer
An autocracy is a type of government in which an individual (the autocrat) holds absolute and supreme authority. The judgments of this autocrat are obedient to neither outside judicial restraints nor regularized devices of conventional charge. Therefore, an autocratic rule implies that all the power is possessed by a single person, who rules the state according to his pleases. In the context of Russia, the autocratic ruled existed in the periods of monarchy and communism.