Observation of tool-making among chimpanzees was revolutionary primarily because scientists believed a. chimpanzees lacked the dexterity to make tools b. tool use was a defining characteristic of humans c. tool-making was a defining characteristic of humans d. none of the above select the best answer from the choices provided a b c d

The correct answer is:

c. tool-making was a defining characteristic of humans

Explanation:

They believed that the tool making was a characteristic that was possessed by humans.The initial stone tool making increased by at least 2.6 million years ago. This really made the scientists describe the humans with the chimpanzees. This was an extremely prosperous experiment. The Early Stone Age covers the most basic stone toolkits made by early humans. The Early Stone Age in Africa is comparable to what is described the Lower Paleolithic in Europe and Asia.

i would have to say autosomal