The correct answer is D. Aristocracy of ancient Greek city-states.
Step-by-step explanation
Aristotle was a Greek philosopher that lived during Ancient Greece period and who stood out for his ideas on philosophy and politics. In terms of politics, for Aristotle, the government should be formed by a small group composed of people with great intellectual development such as philosophers, mathematicians, astronomers among others that were considered as the aristocracy in Ancient Grece and according to Aristotle were considered as the most suitable government or a moral type government in the city-states of antiquity. So, the correct answer is D. Aristocracy of ancient Greek city-states.