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
[{'content': 'Excitatory neurotransmitter of brain is? \nSelect and explain. \nA. GABA, B. Aspartate, C. Glutamate, D. Glycine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C Glutamate* The most prevalent transmitter is glutamate, which is excitatory at well over 90% of the synapses in the human brain.* The next most prevalent is Gamma-Aminobutyric Acid, or GABA, which is inhibitory at synapses in the human brain.', 'role': 'assistant'}]