Answer:
D. Some people became herders.
Step-by-step explanation:
Some people became herders, is the right answer.
Domestication is the method of genetic rearrangement of wild plants and animals into cultivated and domestic patterns according to the interests of humans. In its most stringent sense, it applies to the primary stage of the human influence of wild plants and animals. The primary distinction of domesticated plants and animals from their natural ancestors is that they are produced by human effort to adhere precise requirements or caprices and are accustomed to the contingencies of constant care and concern people keep for them. Accordingly, when humans developed domestication some of them became herders.