Emmett and Daphne are in the middle of a civil dispute. The heart of the controversy involves whether or not Emmett is liable for violating a state aviation statute related to safety devices on personal aircraft. There is a federal law that conflicts with the state aviation statute. The federal law prohibits the use of the safety devices required by the state law. The federal law was enacted more recently based on new evidence that the safety devices were actually more harmful than helpful.

Which law should the court apply?

The state law, because states have to power to regulate for the public welfare

The state law, because of state supremacy

the federal law, because of federal supremacy

the federal law, because of the federal government's power to regulate for the public welfare