Rise, Double
I don't know if this is right, sorry.
Answer:
Blood transfusions and unprotected sexual practices.
Explanation:
The behaviour which are more prone to obtaining the risk of HIV are exposed to blood transfusions. According to the one of the most important study by CDC who reffrrred as Centers for Disease Control and Prevention, through blood transfusions HIV virus exposure id s maximum to human body. However other important human behaviour most prone to risk of HIV is unprotected sexual practices with multiple partners.
Is this something to solve or a joke
The Judaical Branch. Which includes the the supreme court and judges.
Tip: Judaical= judges Executive= President and his cabinet and such Legislative= Law makers such as representatives and senators<span />