Which of the following conditions allows a minor to make medical decisions?

In many jurisdictions, minors who are on active duty in military service are granted certain rights and privileges that are typically reserved for adults, including the ability to make their own medical decisions. This is often due to the legal responsibilities that come with military service, which necessitates a degree of autonomy in decision-making. Being in the military may also reflect a level of maturity and responsibility that lawmakers recognize by extending these rights.

The other conditions provided do not generally confer the same rights to make medical decisions. For instance, being a college student does not automatically grant a minor the authority to make decisions regarding medical care; they still remain subject to the laws governing minors. Living with a guardian, while it may indicate stability, does not provide the same level of legal authority as active military service. Finally, age alone, such as being 10 years or older, does not typically grant a minor the ability to make medical choices independently; medical decision-making rights typically depend on the specific laws in a given state or country.