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
'Reinforcement' is used in : 
Select and explain. 
A. Psychoanalysis, B. Hypnoanalysic, C. Abreaction, D. Conditioned learning
D: Conditioned learning
Answer: D: Conditioned learning 
Explanation: D i.e. Conditioned learning