Which of the following constitutes a dependent child in juvenile law?

A dependent child in juvenile law is typically defined as a child who has been removed from their home due to abuse, neglect, or inability of the parents to care for them, and is thus living under the care of the state or in foster care. This designation is meant to protect the wellbeing of children who cannot remain safely with their biological families.

In this context, the correct answer reflects this legal definition. A child living in foster care is considered a dependent child because they are under the state's care as a result of circumstances that have placed them in a vulnerable situation.

Options like a child regularly attending school, a child living with biological parents, and a child receiving medical treatment do not align with the definition of a dependent child. While these states can be indicative of a well-adjusted child, they do not imply any legal dependency on the state or the absence of parental care, which is central to the definition of dependency in juvenile law.