Final answer:
Carl Jung is the psychiatrist who popularized the terms extravert and introvert, which are central concepts in his analytical psychology framework and have had a lasting impact on the study of personality psychology. So the correct answer is option (A).
Step-by-step explanation:
The psychiatrist who popularized the terms extravert and introvert was Carl Jung. Jung's theories were part of his broader framework of analytical psychology, which emphasized the balance between conscious and unconscious aspects of personality. These ideas play a significant role in the realm of personality psychology and have been influential across a wide variety of models concerning human behavior and temperament.
Jung's association with these terms is indicative of his departure from the theories of Sigmund Freud, with whom he had a complex and collaborative relationship early in his career. His exploration of introversion and extroversion helped categorize different personality types and how individuals gain energy and interact with the world around them.