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
[{'content': 'Osmotic adaptation is NE \nSelect and explain. \nA. Due to osmolytes, B. In brain cells, C. Due to urea & glucose mainly, D. Protects against large H2O shift', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Due to urea of glucose mainly', 'role': 'assistant'}]