This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
Which of the following is inactive during normal respiration? 
Select and explain. 
A. Pre-Botzinger complex, B. Dorsal motor neurons, C. Ventral VRG group of neurons, D. Pneumotaxic centre
C: Ventral VRG group of neurons
Answer: C: Ventral VRG group of neurons 
Explanation: Ventral group of respiratory neurones are inactive during normal respiration Ref: guyton and hall textbook of medical physiology 12 edition page number: 370,371,372