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: Physiology
[{'content': 'Which one of the following phenomena is closely associated with slow wave sleep: \nSelect and explain. \nA. Dreaming, B. Atonia, C. Sleep walking, D. Irregular hea rate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Sleep walking', 'role': 'assistant'}]