Which Is an Example of a Federal Mandate

Which is an example of a federal mandate?

A) The Supreme Court upholds a federal law requiring all citizens to wear a seatbelt while operating a motor vehicle.
B) Congress passes a law requiring all states to adopt a sex offender registry system.
C) The Environmental Protection Agency sends money to Louisiana to help with cleanup from the gulf oil spill.
D) The Nevada legislature passes a law requiring all public school teachers to spend 20 hours per week preparing students for the state achievement test.-Consider This: While this is an example of a mandate,since it originates from the state of Nevada it cannot be considered a federal mandate.