Thus is the political institution that sets national policy by interpreting the law.

A. The appellate court
B. The state court
C. Court of Appeal
D. Supreme Court

Is it d.

Yes. :-) D.

Yes, you are correct. The political institution that sets national policy by interpreting the law is the Supreme Court (option D). To arrive at this answer, one should have some basic knowledge about various political institutions and their functions.

The Supreme Court is the highest court in the United States and is responsible for interpreting the laws and the Constitution. It has the power to make decisions on legal cases, determine the constitutionality of laws, and establish precedent that lower courts must follow. The decisions made by the Supreme Court have a significant impact on shaping national policy and have the potential to influence social, cultural, and political issues.