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
The mechanism of learning and memory, include all except: 
Select and explain. 
A. Changes in level of neurotransmitter at synapse, B. Increasing protein synthesis, C. Recruitment by multiplication of neurons, D. Spatial Reorganization of synapse
C: Recruitment by multiplication of neurons
Answer: C: Recruitment by multiplication of neurons 
Explanation: C i.e. Recruitment by multiplication of neurons