"positive" or "reactive" HBsAg test result means that the person is infected with hepatitis B. ... A positive anti-HBs (or HBsAb) test result means you are “immune” and protected against the hepatitis B virus and cannot be infected.
A) For it does not require a life long commitment, and it is not C) because it can be any substance not just tobacco!
Thus your answer is A) gradually but completely withdrawing substances from use !
Have a happy life !
:D <span />
The answer is true I looked up the effects
The answer to the blank in the above statement is 30%.
