The correct answer is B) Homo Habilis.
Homo Habilis would have most likely been left behind in the Olduvai Gorge.
Olduvai Gorge is a place in Tanzania, considered as the "Cradle of Humanity" by many anthropologists. It is a paleanthropological site that has helped scientist to understand the evolution of humankind. More specifically, it is located in the Serengeti Plains, in the Arusha region. Scientist and anthropologists think that Homo Habilis inhabited this territory 2 million years ago.