Perceptional misinterpretation of a real object is: (A) Hallucination, (B) Schizophrenia, (C) Illusion, (D) Delusion
Answer is C. Illusion: Perceptual misinterpretation of a real external stimulus. Reference: Kaplan & Sadock's Synopsis of Psychiatry: Behavioral Sciences/Clinical Psychiatry, 11th Edition, page 1413.