Final answer:
Runaway children unsupervised for more than two weeks may become involved in criminal activities or exploitation, influenced by the lack of permanent family support and stability.
Step-by-step explanation:
Runaway children who remain at large for two or more weeks may become involved in several high-risk activities due to the lack of supervision and support systems. These activities range from juvenile delinquency to more severe issues like drug use and exposure to physical or sexual abuse.
Various factors contribute to the vulnerability of runaway children, such as the absence of stable family structures due to parents' inability to care for their children, leading to alternate living situations like living with relatives or foster care. The extended period of unsupervision can lead these children to seek out ways to survive, which unfortunately may result in involvement with criminal activities or exploitation.
Additionally, the historical increase in juvenile delinquency rates and children living with guardians who are not their biological or adoptive parents indicate that the lack of a permanent, stable family environment can have detrimental effects on children's behavior and choices.