Which of the following is a resource for identifying intelligence authorities?

The correct answer is B, DoD Directive 5240.1-R, because it specifically governs the collection, analysis, and dissemination of intelligence information within the Department of Defense (DoD). This directive outlines the authorities, responsibilities, and procedures that pertain to intelligence activities, including the legal frameworks required for such operations. It serves as a fundamental document for understanding the limitations and permissions related to intelligence collection.

In contrast, the Uniform Code of Military Justice primarily deals with military law and the legal framework for military personnel, rather than intelligence authorities. The National Defense Authorization Act is a legislative measure that outlines the budget and expenditures for the DoD but does not specifically address intelligence authorities. The Military Commissions Act focuses on procedures for trying unlawful combatants and does not provide guidelines specifically for intelligence activities.

Thus, DoD Directive 5240.1-R is the most relevant resource for identifying intelligence authorities within the context of military operations and intelligence functions.