This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following actions can help in the prevention of HIV transmission? \nSelect and explain. \nA. Use of copper T by sex workers, B. Using safe injection techniques, C. Avoidance of smoking by drivers, D. Probihiting voluntary blood donation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: <p> HIV transmission cannot be prevented by avoidance of smoking by drivers. It can be prevented by using condoms.avoiding indiscriminate sex,screening of blood for HIV 1&2 before transfusion,using pre-sterilised disposable syringes and needles. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:351. <\\p>', 'role': 'assistant'}]