Which of the following was a feature of the Incan empire?

A) development of irrigation and cold-storage techniques

B) study of astronomy

C) creation of mounded religious shrines

D) villages with multistoried apartments and storage rooms

The answer is the development of irrigation and cold-storage techniques. As early as the Inca civilization they already developed an advanced way of farming through their own system of engineering. They created terraces and irrigation to counter the problem with their climate and provide sufficient crops for the consumption of their people.