The full faith and credit clause, allowing states to recognize legal procedures such as marriage, is contained in this article.
a. article three
c. article five
b. article four
d. article six

b. article four

Explanation:

The Full Faith and Credit Clause is established in Article IV, Section I of the US Constitution. It requires that each state accept the public acts, records, and judicial proceedings of every other state and allows Congress to make laws that regulate the manner “in which such acts, records, and proceedings shall be proved, and the effect thereof.” This clause guarantees that a ruling made in the court of a state be also enforced in the other states.

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