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
A chronic alcoholic blames the family environment as a cause of his alcoholism. This is phenomenon of: 
Select and explain. 
A. Projection, B. Denial, C. Rationalization, D. Sublimation
C: Rationalization
Answer: C: Rationalization 
Explanation: Rationalization: Offering rational explanations to justify own unacceptable behavior. For example, an alcoholic blamed his family environment for his habit of excessive drinking. It is a commonly used defense mechanism in substance use disorders.