This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psychoanalysis, Subject name: Psychiatry
According to Sigmund Freud, primary process thinking is: 
Select and explain. 
A. Illogical and bizarre, B. Rational, C. Absent during sleep, D. Logical and unconscious
A: Illogical and bizarre
Answer: A: Illogical and bizarre 
Explanation: The primary process thinking is a characteristic of unconscious mind. It is illogical and aims for immediate wish fulfillment. It is illogical and contradictory