Answer:
Based on the information provided, the most appropriate diagnosis for the 48-year-old man presenting with psychosis is:
c. Schizophrenia, multiple episodes, currently in partial remission
Schizophrenia is a chronic mental disorder characterized by periods of psychosis, which involves hallucinations, delusions, disorganized thinking, and other symptoms that impair daily functioning. The fact that the individual is experiencing psychosis and is 48 years old suggests a longer-term pattern of symptoms rather than a brief psychotic episode. Additionally, the mention of "multiple episodes" indicates a recurrent pattern of symptoms, and the phrase "currently in partial remission" suggests that the individual may be experiencing a reduction in the severity of symptoms but still has residual symptoms or impairment. Therefore, option c is the most appropriate diagnosis based on the information provided.
