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
Which of the following actions can help in the prevention of HIV transmission? 
Select and explain. 
A. Use of copper T by sex workers, B. Using safe injection techniques, C. Avoidance of smoking by drivers, D. Probihiting voluntary blood donation
C: Avoidance of smoking by drivers
Answer: C: Avoidance of smoking by drivers 
Explanation: <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>