The best answer that explains the difference between the Mayan civilization and the Inca Empire is:
The Mayan civilization relied on independent city-states and a demigod monarch, while the Inca Empire relied on a centralized government and council of nobles.
This response accurately highlights the fundamental organizational differences between the two civilizations. The Mayans were characterized by a decentralized structure of competing city-states, each ruled by its own leader, often viewed as a divine or semidivine figure. In contrast, the Inca Empire operated under a more centralized government, ruled by a singular emperor and supported by a council of nobles.