One of Henry Murray's chief contributions to the field of personality psychology was the development of the ___________.

A) Minnesota Multiphasic Personality Inventory
B) Thematic Apperception Test
C) 16-PF (16 personality factors)
D) Rorschach Inkblot Test

Henry Murray is best known for the development of the Thematic Apperception Test (TAT), which assesses people's needs, motives, and emotions based on the stories they create in response to ambiguous pictures. Murray believed that people's personalities are shaped by their unconscious needs, desires, and fears, and the TAT was designed to tap into these hidden aspects of the mind. While Murray did contribute to the development of other personality tests, such as the 16-PF, the TAT remains his most enduring legacy in the field of personality psychology.