What defines an "emancipated minor" legally?

An emancipated minor is legally defined as a minor who has been granted adult rights and responsibilities, allowing them to make decisions independent of parental authority. This status typically occurs through a court process or certain circumstances, such as marriage or military service, depending on jurisdiction. Once a minor is emancipated, they can enter into contracts, make medical decisions, and take legal actions without parental consent or involvement, effectively functioning as an adult in the eyes of the law.

The other options do not accurately capture the essence of emancipation. For example, while some minors can make medical decisions independently, this is not exclusive to emancipated minors as other laws may allow minors specific medical rights. The requirement for parental consent for medical treatments suggests a lack of emancipation, and completing a medical training program does not confer the rights associated with being an emancipated minor. Thus, option B correctly defines the concept of an emancipated minor within legal frameworks.