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
Which of the following is a mature defense mechanism? 
Select and explain. 
A. Anticipation, B. Projection, C. Undoing, D. Isolation of affect
A: Anticipation
Answer: A: Anticipation 
Explanation: Anticipation is a mature defense mechanism where an individual plans in advance to deal with an uncomfortable event.
Ex: A student who has failed in his exam plans for his arguements to console his parents while returning home.