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

Are final and may not be appealed.

Explanation:

The U.S. Supreme Court is established in the United States Constitution as the final court of appeal. It has the power to supervise and check the actions made by Congress and the US President, as well as solving disputes between states, citizens and government and state and government as long as it involves federal laws. The Supreme Court, however, has the power to decide which cases it will hear, and if it decides not to hear a case the lower court decision is the final decision.

i beleive a. is the only possible answer

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.