Answer:
Step-by-step explanation:
Based on the information provided in the passage, the best-supported conclusion is:
(4) Environmental adaptation aided economic development.
The passage describes the Aztecs' farming method of creating chinampas, which involved building artificial islands on the lake and using them to cultivate crops. This method allowed them to grow enough food to feed their expanding population comfortably. Additionally, the passage mentions that the roots from the tree rafts attached themselves to the lake bottom, providing a stable foundation for buildings. This indicates that the Aztecs adapted to their environment and utilized its resources effectively to support their economic development.