Answer :
Final answer:
The Inca cultivated a variety of crops, but a)maize was grown extensively using irrigation systems and terrace farming.
Explanation:
In an excerpt of a Spanish colonizer's observation of the Inca, it is evident that they grew lots of maize, using irrigation systems. The Inca were known for their advanced agricultural techniques, which included terrace farming that allowed for the cultivation of a variety of crops despite the challenging Andean terrain. Maize was a staple crop for the Inca, grown extensively alongside other crops such as beans, squash, and quinoa. Additionally, the indigenous potato was cultivated on terraced land. The Inca implemented systems that were sophisticated and technologically advanced for their time, facilitating a diverse and stable food supply.