Answer:
A) To provide oxygen to the person's lungs.
More than 480,000 , and more than 41,000 deaths due to secondhand smoke exposure
If your full question is
Which risk factor is least likely to result in someone contracting HIV infection?a.Multiple sexual contacts
b.Hemophilia
c.Intravenous drug use
d.<span>Working with AIDS patients
your answer is undoubtedly D, working with AIDS patients.</span>