Which definition best describes psychology?

The definition of psychology as a science that studies behavior and mental processes is accurate because psychology systematically investigates the cognitive, emotional, and social factors that influence how individuals think, feel, and act. It employs empirical research methods to gather data, test hypotheses, and develop theories about human behavior. This scientific approach distinguishes psychology from art forms, philosophy, and spiritual disciplines, which do not primarily rely on data-driven investigation or experimentation. By focusing on observable behavior and internal mental activities, psychology aims to provide a deeper understanding of the complexities of human nature and interactions, ultimately contributing to various fields such as mental health, education, and social sciences.