Decisions of the u. s. supreme court (3 points)
a) prevent legislation from proceeding b) require federal legislation changes c) may be appealed to a higher court d) are final and may not be appealed

The U.S Supreme Court is the center to give the final decision or judgment of all cases relating to the Congress and Constitution. And based on the decisions they make, these included are final and may not be appealed. The best answer to this would be option D. Hope this helps.