Final answer:
Researchers studying why primates leave their home group are examining primate behavior, physical attributes, and their relationships with the environment. This research can help better understand primate behavior and its connection to human behavior, and also identify threats to the survival of primates.
Step-by-step explanation:
Researchers studying the causes of why certain primates leave their home group to find new groups are examining the behavior and physical attributes of primates as well as their relationships with their environments. By studying nonhuman primates, anthropologists can gain a better understanding of primate behavior and how it relates to human behavior. They also study factors such as habitat loss, illegal hunting, and the pet trade that threaten the survival of primates.