Answer:
D. labels
Step-by-step explanation:
The Rosenhan research study that was conducted in 1973 focused on the validity of the psychiatric diagnosis.
Through the research, Rosenhan concluded that the psychiatric label has a longer effect on the perception of the medical practitioners on the patient.
That is the moment a psychiatric label has been given on a patient, everything a patient does is analyzed in the context of that label.
Hence, in this case, the correct answer is LABEL.