A main purpose of the passage is to A: chronicle the evolution of Nahua survivalist strategies from the year 1521 onward B: critically evaluate the means of Nahua survival on the basis of their efficacy C: suggest that Nahua interacted with their conquerors to create new technologies D: explore the rich cultural heritage endowed the Nahua by their tradition of survival E: apply a general schema for cultural survival to the case of the Nahua