This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Lack of insight is not a feature of- 
Select and explain. 
A. Panic disorder, B. Schizophrenia, C. Mania, D. Reactive psychosis
A: Panic disorder
Answer: A: Panic disorder 
Explanation: Panic disorder (Anxiety disorder) is a neurosis in which the insight is preserved.