Which of the following does NOT lead to the emancipation of a minor?

Turning 18 does not lead to the emancipation of a minor in the same way that the other options do. Emancipation refers to the legal process by which a minor gains independence from their parents or guardians, allowing them to make decisions and enter into contracts as an adult. While in many jurisdictions, individuals reach the age of majority at 18 and are automatically considered adults, this is essentially a legal transition rather than an act of emancipation.

In contrast, marrying, joining the military, and becoming self-supporting are all actions that actively lead to emancipation. For example, marriage is a legal status that grants minors certain rights and responsibilities, effectively removing parental authority. Joining the military is also a recognized path to emancipation because it requires individuals to take on adult responsibilities. Additionally, becoming self-supporting demonstrates the minor's ability to care for themselves financially and might lead a court to recognize them as emancipated.

Thus, turning 18 is a milestone marking the end of minority status, but it does not constitute an action or condition that independently causes emancipation; rather, it is a statutory change that occurs automatically, unlike the other options that require specific steps to achieve independence.