Alocal convenience store is fined on the basis of state law for selling cigarettes to minors is an example of which principle of united states health law? a. police powers allows states to pass legislation and take actions to protect the common good. b. the interstate commerce clause of the united states constitution has been used as a basis for justifying federal action in the area of health. c. a provision of international law does not apply in the united states unless united states law incorporates the provision such as ratification of a treaty by the united states congres. s d. all of the above.