Answer:
"You can get or transmit HIV only through specific activities. Most commonly, people get or transmit HIV through sexual behaviors and needle or syringe use. Only certain body fluids—blood, semen, pre-seminal fluid, rectal fluids, vaginal fluids, and breast milk—from a person who has HIV can transmit HIV"
- https://www.cdc.gov/hiv/basics/transmission.html
"HIV is a virus. AIDS is a condition. They are not the same thing. HIV is an infection that you can catch and spread to other people, AIDS is a condition (or syndrome) that develops – usually many years later - in people who have been infected with HIV, but have not had the right, or perhaps any, treatment"
- https://hivselftest.co.uk/blogs/news/are-hiv-and-aids-the-same-thing
2 and 3, it could be all, depending on the situation
(C) The term “a smoker’s cough” refers to "Chronic Bronchitis", <span>which is caused by a long-term inflammation of the bronchi.
Hope this helps!</span>
The answer to your question is b
