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': 'Membrane fluidity is increased by: \nSelect and explain. \nA. Stearic acid, B. Palmitic acid, C. Cholesterol, D. Linoleic acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Linoleic Acid', 'role': 'assistant'}]