The ________ affirms that national laws and treaties are the supreme law of the land.

A) full faith and credit clause
B) necessary and proper clause
C) doctrine of national supremacy
D) doctrine of stare decisis

The doctrine of national supremacy affirms that national laws and treaties are the supreme law of the land, meaning that they take precedence over state laws and constitutions. The full faith and credit clause requires states to recognize and give effect to the public acts, records, and judicial proceedings of other states, while the necessary and proper clause grants Congress the power to pass laws that are necessary and proper to carry out its duties. The doctrine of stare decisis refers to the principle of following established legal precedent in deciding court cases.