Drug prevention campaigns in British schools and on television warn teenagers about the danger of drugs and alcohol but McArdle said no one is dealing with the problem of their parents' responsibility According to McArdle,which is most likely to have the drug abuse problem   _   ?
18-year-old Juliet living with her single father.
19-year-old Mark cared by his parents.
16-year-old Tom from a happy big family
17-year-old Kate supervised by her single mother.