Please read the following chart/excerpts/passages closely and then choose the BEST answer for each of the questionsaccording to the contents.When humans first ventured out of Africa some 60,000 years ago, they left genetic footprints still visible today. Bymapping the appearance and frequency of genetic markers in modern peoples, we create a picture of when and where ancienthumans moved around the world. These great migrations eventually led the descendants of a small group of Africans to occupyeven the farthest reaches of the Earth.Our species is an African one: Africa is where we first evolved, and where we have spent the majority of our time on Earth.The earliest fossils of recognizably modern Homo sapiens appear in the fossil record at Omo Kibish in Ethiopia, around200,000 years ago. Once the climate started to improve, the population expanded, and some intrepid explorers ventured beyondAfrica. These early beachcombers expanded rapidly along the coast to India, and reached Southeast Asia and Australia by50,000 years ago. Around 20,000 years ago a small group of these Asian hunters entered the East Asian Arctic during the LastGlacial Maximum. At this time the great ice sheets covering the far north had literally sucked up much of the Earth’s moisturein their vast expanses of white wasteland, dropping sea levels by more than 300 feet. This exposed a land bridge that connectedthe Old World to the New, joining Asia to the Americas. People’s journey never ended. By 14,000 years ago they had penetratedthe land south of the ice, and made it all the way to the tip of South America. Is this part of story amazing?
31. This essay falls into the research field of _________.
(A) genetic engineering
(B) biotech engineering
(C) romantic history
(D) travel literature
(E) migration studies