Several weeks after being fired from a job he had held for more than 20 years,Landon awoke one morning in a state of bewildered confusion.He had little sense of who he was and even failed to recognize his wife.Landon's experience is most indicative of

A) a dissociative disorder.
B) borderline personality disorder.
C) schizotypal personality disorder.
D) bulimia nervosa.

Landon's symptoms are most indicative of a dissociative disorder, specifically dissociative amnesia. This disorder involves disruptions in memory, identity, and/or awareness of the surrounding environment, often triggered by a traumatic event or stress. Landon's firing from a long-held job may have been the stressor that triggered his dissociative amnesia, leading to his confusion and failure to recognize familiar people and places. The other options (borderline personality disorder, schizotypal personality disorder, bulimia nervosa) do not fit with Landon's symptoms.