This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Schizophrenia Spectrum and Other Psychotic Disorders, Subject name: Psychiatry
Characteristics clinical manifestation of schizophrenia are: 
Select and explain. 
A. Formal thought diosrder, B. Delusions, C. Auditory hallucinations, D. Visual hallucinations
A: Formal thought diosrder
Answer: A: Formal thought diosrder 
Explanation: All the options are symptoms of schizophrenia. however, if the question asks about characteristic abnormality. the best answer is formal thought disorders. If a paicular formal thought disorder needs to be chosen, the best answer would be neologism