Final answer:
The biopsychosocial approach studies how genes, hormones, and the nervous system interact with the environment to influence behavior and mental processes.
Step-by-step explanation:
The biopsychosocial approach studies how our genes, hormones, and nervous system interact with the environment to influence behaviors and mental processes. It focuses on the biological mechanisms that underlie behavior and genetic expression. For example, health psychology explores how health is affected by the interaction of biological, psychological, and sociocultural factors.