Answer:
O The Aztec saw an eagle eating a snake and thought it was a sign.
Explanation:
The settlement of the Aztec people or Mexica people was based on the belief that they will get a sign from their god, directing them where to set their roots. This ancient belief would lead to the founding of the capital city of the Aztec empire, Tenochtitlan.
According to their myth, the Aztecs believe that their god Huitzilopochtli will guide them and direct them where to settle. So, moving from one point to another, they came upon the swampy lake in Lake Texcoco where they saw an eagle eating a rattlesnake atop a cactus. This was the sign they were looking for, a snake eaten by an eagle perched atop a cactus. So, they began building towns around the lake, resulting in the founding of Tenochtitlan.
Thus, the correct answer is the third option.