Biological anthropologists have discovered a previously unknown fossil species namedAustralopithecus sediba. The species lived about 2 million years ago in Africa and has an interesting mix of traits. For example, its arms are adapted for climbing in trees and its legs are adapted for walking on two legs on the ground. It does not directly resemble any of the living ape species, which suggests that the living ape species (including humans) have each become adapted for their own environmental contexts over time. What is the primary type of biological anthropology addressed in this research?
A. Human biology
B. Forensic anthropology
C. Paleoanthropology
D. Primatology
Does the research also touch on topics that might be relevant to researchers in disciplines outside anthropology, such as biology, geology, psychology, medicine, sociology, or criminology? Which of the following disciplines would be most relevant?
A. Psychology
B. Biology
C. Criminology
D. Sociology
How does this research relate to human evolution? In other words, what can we learn about human evolution from research along these lines?

SCENARIO B
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

Does the research also touch on topics that might be relevant to researchers in disciplines outside anthropology, such as biology, geology, psychology, medicine, sociology, or criminology? Which of the following disciplines would be most relevant?
A. Criminology
B. Geology
C. Medicine
D. Psychology
How does this research relate to human evolution? In other words, what can we learn about human evolution from research along these lines?