B2
an official rule made by a government
Dictionary examples:
The law is intended to protect wildlife. (30.8)
Many states have passed laws against using a cell phone while driving. (35.8)
state/federal law (37.7)
Motor vehicle insurance is required by law. (37.9)
labor/immigration laws (47.2)
We have a law in this state that drivers must wear seatbelts. (57.7)