<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A senior medicine resident receives negative feedback on a grand rounds presentation from his attending. He is told sternly that he must improve his performance on the next project. Later that day, he yells at his medical student for not showing enough initiative, though he had voiced only satisfaction with the students performance up until this point. Which of the following psychological defense mechanisms is he demonstrating?? A: Transference, B: Countertransference, C: Externalization, D: Displacement, E: Projectionn,  <response>: This question is asking about psychological defense mechanisms demonstrated by a senior medicine resident. The scenario describes the resident receiving negative feedback from his attending physician, and then taking out his frustration on his medical student later that day. The key details are that the resident received criticism from his attending, and then was harsh with his student, even though the student had not done anything wrong. This suggests the resident is displacing his own feelings of inadequacy onto the student. Of the options provided, displacement best fits this scenario. Transference and countertransference refer to redirection of feelings toward a substitute person, usually in a therapeutic context. Externalization refers to attributing problems to external causes rather than internal. Projection refers to attributing ones own flaws or motivations onto others.D: Displacement 