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': 'Jean Piaget put forth the theory of \nSelect and explain. \nA. Psychoanalytic theory of psychosexual development, B. Social learning, C. Cognitive development, D. Cultural adaptation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]