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
Jean Piaget put forth the theory of 
Select and explain. 
A. Psychoanalytic theory of psychosexual development, B. Social learning, C. Cognitive development, D. Cultural adaptation
C: Cognitive development
Answer: C: Cognitive development 
Explanation: None