Which of the following groups has lived on the continent of south america for the longest time?

Native Americans.

Explanation:

It is predicted that the native Americans have been staying in South American continent for around 14,000 years ago.

Early signs of other settlers on the other hand only started to be detected in the 1400s. So we can conclude that the native Americans have been living in that area 15,000 prior the European/Hispanic people did.

answer; face validity;