Final answer:
The correct answer is the Full Faith and Credit Clause, which requires states to respect each other's laws and judicial decisions, facilitating interstate relations and legal uniformity across the U.S.
Step-by-step explanation:
The correct answer to the question is b) Full Faith and Credit Clause.
One state must recognize the public acts, records, and judicial proceedings of other states according to the Full Faith and Credit Clause found in Article IV, Section 1 of the U.S. Constitution. This clause is paramount for maintaining interstate relations and ensuring that there is uniformity and respect for each state's laws and judicial decisions across the entire country. It has become increasingly significant as Americans regularly travel between states and engage in activities that require such legal recognitions, like driving with a license from one state in another state.
The clause also played a role in discussions on marriage equality, highlighting its importance in current affairs. Furthermore, while the clause ensures that states respect other states' legal proceedings, Congress has the authority to determine how these proceedings should be proven and the effect thereof.