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: Social & Preventive Medicine
[{'content': 'Primary prevention includes:a) Marriage counselingb) Health educationc)  Pap smeard)  Self breast examinatione)  Health promotion \nSelect and explain. \nA. cb, B. bad, C. abe, D. da', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]