What is the region of the world that was likely occupied last by early humans was . a. South America. c. Southern Asia. b. North America. d. Northern Asia.?

The region of the world that was likely occupied last by early humans is a. South America. This is primarily due to the timing of human migration patterns, which suggest that humans first populated areas in Africa, then moved into Asia and North America before finally reaching South America. The last major migrations into South America occurred around 15,000 years ago, after the earlier colonization of other continents.