A. gradual and complete withdrawal from a drug under medical supervision
Explanation:
The question above is related to "drug addiction." In order to manage a drug addict and his withdrawal symptoms, it is important to "detoxify" him. <em>Gradual withdrawal</em> is important in order to prevent the person from experiencing<u> dangerous drug-withdrawal symptoms; so this is</u> done under medical supervision until such time that the person's body will be free from drugs. This is also the same with <em>alcohol addiction. </em>
This process may last to<em> many months</em> depending on the type of drug that the user used.
