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
Child not eating vegetables. His mother stas giving a chocolate each time he finishes vegetables in the diet. The condition is 
Select and explain. 
A. Operant conditioning, B. Classical conditioning, C. Social training, D. Negative reinforcement
A: Operant conditioning
Answer: A: Operant conditioning 
Explanation: Ans. a. Operant conditioning