This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of Psychiatry, Subject name: Psychiatry
[{'content': 'Pruning is:- \nSelect and explain. \nA. Programmed elimination during development, B. Programmed elimination during senility, C. Programmed elimination during cancer, D. Programmed elimination during irradiation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pruning: * Programmed elimination during development of neurons, synapses, axons and other brain structures The fetal brain has more neurons generated than required for adult life The reduction is to remove all the unnecessary cells or cells which have already served their function', 'role': 'assistant'}]