Which statement best summarizes the purpose of Article IV of the Constitution?

Article IV of the United States Constitution primarily addresses the relationships and interactions between the states and the federal government. It establishes the framework for how states should interact with one another, particularly in terms of legal matters, allowing for mutual respect of state laws and judicial decisions. This article includes provisions such as the Full Faith and Credit Clause, which requires states to recognize the public acts, records, and judicial proceedings of every other state. Additionally, it lays out the process for admitting new states to the Union and also includes protections for the states against invasion and domestic violence.

In summary, Article IV aims to ensure the unity and cooperation among states while outlining the structure and responsibilities of governance within the federal system. It emphasizes the importance of a collaborative relationship that upholds state sovereignty while subject to federal standards.