Answer:
Biological
Step-by-step explanation:
Biological psychology, also referred to as Bio-psychology. Biological psychologist mainly focuses on studying human behavior and its psychological causes. Bio-psychology is a field in which the body-mind relation is being studied through scientific research. It includes studying the immune system, genetic and nervous system. Biological psychologists often try to understand the basics of brain injuries by conducting research and also the ways of developing stress and depression.