This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'Memory needed for repetitive skills is \nSelect and explain. \nA. Declarative, B. Semantic, C. Explicit, D. Implicit', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Implicit memory is subdivided into 4 types. Procedural memory includes skills and habits, which once acquired becomes unconscious and automatic. Ref: Ganong&;s review of medical physiology; 23rd edition; pg:290.', 'role': 'assistant'}]