Read the following concluding paragraph and decide the methods it used. ( Title: Drug addiction in the United States ) ( Introduction ) The non-medical use of certain drugs is forbidden in the United States because they can be dangerous. Many Americans, however, still use drugs illegally without a doctor’s permission. ( Thesis statement ) In fact, the abuse of drugs has become one of America’s most serious social problems. ... ( C onclusion ) In the United States drugs have destroyed many of the young people’s mind and ruined their bodies, and the situation is not getting any better. Drug addiction has resulted in many a destroyed career, expulsions from school or college, or years in prison. Clearly, using illegal drugs is a losing proposition.