Biological anthropologists have observed several chimpanzees in western Africa making tools to help them hunt. The chimpanzees were seen modifying branches and sticks into spears. They removed any leaves or small branches to make a smooth shaft. They also chewed on the end of the branches to give them sharp points. They then thrust the sharpened branches like spears into tree trunks, where small primates called galagos make sleeping nests. Although it remains unclear how successful the chimpanzees are in actually killing galagos, multiple members of the chimpanzee group have been observed producing the spears. What is the primary type of biological anthropology addressed in this research?(A) Paleoanthropology(B) Human biology(C) Forensic anthropology(D) Primatology

Paleoanthropology is the branch of anthropology which studies the early development of the anatomically the modern humans. This is done through reconstruction of the kinship lines which can be achieved with biological evidences like skeletal remains, footprints, fragments of bones and cultural evidences like stone tools, and artifacts formed and developed by modern humans.

According to the given situation, the chimpanzees were seen to develop weapon against the small primates called as galagos. As chimpanzees were the ancestors of modern humans thus paleoanthropology, which is the primary type of biological anthropology can be used to address the research.