Final answer:
Special Access Program details are classified at the highest level to restrict access and ensure limited disclosure.
Step-by-step explanation:
The statement that best characterizes the classification of the details, technologies, materials, and techniques of a Special Access Program (SAP) is option B: Special Access Program details are classified at the highest level to restrict access and ensure limited disclosure.
Special Access Programs (SAPs) are highly classified programs that are established to protect sensitive information and provide limited access to authorized individuals. These programs often involve advanced technologies, materials, and techniques that are considered crucial to national security. To ensure the safeguarding of these sensitive details, SAPs are classified at the highest level, restricting access and ensuring limited disclosure.