Why does the author mention "The philosopher Aristotle"? A. To provide additional evidence that the ancient Greeks believed that political units must be small B. To demonstrate the accuracy of philosophers' predictions about the end of the classical Greek city-state C. To show how changes in the city-state system from the fifth to the third century B C. were reflected in the ideas of its philosophers D. To support the claim that small city-states were ideally suited to produce philosophical inquiry