12-16 題，段落填空：請根據前後文，選擇一個最適當的答案。
       Most theories of juvenile delinquency have focused on children from disadvantaged families,___12___ the fact that children from wealthy homes also commit crimes. The latter may commit crimesfor lack of adequate parental control. Moreover, more families consist of one parent households or twoworking parents； ___13___, children are likely to have less supervision at home ___14___ was commonin the traditional family system. This lack of parental supervision is thought to be an influence onjuvenile crime rates. Other causes of offensive acts include frustration or failure in school, the increased___15___ of drugs and alcohol, and the growing incidence of child abuse and child neglect. All theseconditions tend to increase the ___16___ of a child committing a criminal act.
【題組】12.
(A) ignoring
(B) considering
(C) highlighting
(D) refusing