what is considered the greatest example of incan engineering

A. the chinampas
B.the road systeem
C. the ayllu system
D. the food storehouses

B. the road system

The Inca Empire is known for its remarkable network of roads, known as the Inca road system. These roads were constructed to connect the vast empire, allowing for efficient communication, trade, and military movement. The engineering and construction of these roads were a significant achievement of the Inca civilization, spanning thousands of miles and including bridges, tunnels, and staircases. The road system played a crucial role in the success and expansion of the Inca Empire.