What does it mean that the US Constitution is the “supreme law of the land”? It is the world’s first constitution.
It is above all state constitutions.
It can never be changed.
It rules absolutely.

The U.S. Constitution calls itself the "supreme law of the land." This clause is taken to mean that when state constitutions or laws passed by state legislatures or the national Congress are found to conflict with the federal Constitution, they have no force.

the navigation act prevented the colonies from exporting to countries other than britain and it prevented the importation of goods by other countries as well. so i believe the correct answer is d. other nations could not deliver goods to the colonies.

hope this .