I believe that it is biology. Biology was found in the 11th century. It studies life and living organisms including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development and evolution.
It only makes sense because A: anthropology is the study of other culters and human behavior. C: sociology has to do with communitacting with other people. and D: psychology is the study of the human mind, and that also has to do with the behavioral way of a human life.
