a When there is a dispute between the state and national I government, which I level has higher authority? national implied concurrent reserved

The correct answer is: national.<br /><br />When there is a dispute between the state and national government, the national government has higher authority. This is because the national government has the power to regulate interstate commerce, national defense, and other matters that affect the entire country. The Supremacy Clause in the U.S. Constitution establishes that the Constitution, federal laws, and treaties are the supreme law of the land, and state laws must comply with them. Therefore, in cases of conflict, the national government's authority takes precedence over state authority.