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: Dental
[{'content': 'The art of reinforcing good behaviour displayed by the\nchild with verbal praise applies the \nSelect and explain. \nA. Operant conditioning theory, B. Classical conditioning theory, C. Psychoanalytical theory, D. Social learning theory', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]