Which age groups are frequently involved in missing person cases?

The correct choice highlights that children, the elderly, or at-risk adults are frequently involved in missing person cases due to several factors specific to these demographics. Children are often reported missing due to various reasons, including abductions, running away, or misunderstanding regarding their whereabouts. The elderly, particularly those with cognitive impairments such as dementia or Alzheimer's disease, can wander off and become lost. Similarly, at-risk adults who may suffer from mental health issues or substance abuse vulnerabilities also face higher risks of going missing.

In contrast, while teenagers and adults do go missing, the question specifically addresses age groups that are disproportionately represented in missing person scenarios, making this selection more comprehensive. Young adults might experience missing person situations primarily due to factors like choices related to lifestyle or independence, but they don’t encapsulate the broader and more vulnerable groups identified in the correct answer. Focusing solely on elderly individuals overlooks the significance of children and at-risk adults, who also represent critical portions of missing person cases.