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 />
B. The meeting agenda.
The meeting agenda is an over of the meeting and what is to be expected or gone over.
The answer is D pulse oximeter
hope this helps
Either seek new friends or suggest an alternative