Final answer:
In many legal systems, including the United States, the minimum age for exemption from criminal responsibility is 18 years old, at which individuals are considered adults and accountable for their actions.
Step-by-step explanation:
In many legal systems, including the United States, the minimum age at which a person is exempt from criminal responsibility is 18 years old.
At this age, individuals are considered adults and are held accountable for their actions.
It is important to note that there may be exceptions for juveniles who commit serious crimes, as some jurisdictions have the ability to try them as adults.