Final answer:
The subject is Law, and the crime of practicing dental hygiene without a valid license is punishable by up to 3 years of imprisonment.
Step-by-step explanation:
The subject of this question is Law, and specifically, criminal law. It is important to have a valid, unrevoked, and unsuspended license to practice dental hygiene. If a person willfully practices dental hygiene without the necessary license and under circumstances that risk bodily harm, serious illness, or death, it is considered a crime.
According to the question, the crime is punishable by imprisonment in a county jail for up to 3 years.