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: Pharmacology
[{'content': 'Most impoant mechanism of drug transpo across cell membrane - \nSelect and explain. \nA. Fltration, B. Active transpo, C. Passive diffusion, D. Facilitated diffusion', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Passive diffusion Passive diffusion is the most impoant mechanism of drug transfer across membrane.", 'role': 'assistant'}]