Options B and D cover the study of how human brains, bodies, and languages are produced and change during a person's life.
Psychology is a science that serves society and improves our quality of life. Psychologists investigate the links between brain activity and behavior as well as the environment and behavior, using what they discover to advance our knowledge and the world at large.
A scientific method called developmental psychology seeks to explain how people grow, evolve, and remain consistent throughout their lives.
Thus, options B and D are correct
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