Which of the following is a role of administrative law?

Administrative law plays a crucial role in implementing federal laws by creating detailed regulations and procedures that agencies must follow to enforce those laws. These regulations have the force of law and are necessary for translating broad legislative mandates into specific operational guidelines that ensure compliance with the intent of federal statutes.

For instance, when Congress passes a law, it may require federal agencies to develop rules and regulations that address how that law should be executed in practice. These agencies, guided by administrative law, create the necessary frameworks that impact various sectors, from environment regulations to food safety standards.

The other options do not accurately reflect the primary responsibility of administrative law. While creating state laws is typically a legislative function, enforcing public safety laws can involve various branches of government but isn't specifically tied to administrative law. Establishing private agreements falls under contract law and personal legal affairs, rather than the realm of administrative law where public interest regulations are prioritized.