The correct answer is letter D.
Explanation: The Milgram Experience is a behavioral test developed in 1963 by the master of psychology, the American Stanley Milgram, at Yale University to test people's obedience to an authoritarian figure.
The experiment consists of 3 figures: the scientist, the apprentice (victim) and the teacher (tested person). Only the "teacher" is the real participant of the experiment, the other figures are actors. The scientist, characterized by a white coat and impassive face, says they will both take part in a memory test.