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
Cerebellum functions include 
Select and explain. 
A. Posture and balance, B. Memory and speech, C. Involuntary sphincters, D. Voluntary movement in the lower half of body
A: Posture and balance
Answer: A: Posture and balance 
Explanation: (A) Posture and balance