Answer:
Option B, both evolutionary history and their own individual life histories.
Step-by-step explanation:
Physical anthropologists study about both the evolutionary background of an individual as well as the environmental stresses faced by him/her. They believe the identity of an individual is affected by the following – family background (genetic history), culture is which he/she has been brought up, and also the societal elements. Due to this reason Physical anthropologists focus on different areas such as forensic, skeletal biology, Primatology, human biology etc.
Hence, option B is correct