When the Spanish under Cortes first encountered the indigenous people in Mexico, which feature of the Aztec Empire made the greatest impression upon them?

Cortes and the Spanish soldiers he brought with him were greatly impressed with the Aztec Capital: Tenochtitlan.

Explanation:

Tenochtitlan was the Aztec capital: a large city build in the middle of a lake: the lake of Texcoco.

Tenochtitlan was connected to the mainland by causeways and bridges, and had aqueducts made of terracota.

The Spanish marvelled at the city, and this motivated Cortes to meet the Aztec Emperor: Moctezuma.

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.