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
Which one of the following phenomena is closely associated with slow wave sleep: 
Select and explain. 
A. Dreaming, B. Atonia, C. Sleep walking, D. Irregular hea rate
C: Sleep walking
Answer: C: Sleep walking 
Explanation: C i.e. Sleep walking