What does classification authority block (CAB) indicate?

The classification authority block (CAB) is a critical component in the classification markings of classified documents. It specifically indicates the authorized individual's name, who has the authority to classify the document, along with the date when the classification was assigned. This ensures that there is clear accountability for the classification decision and provides information about who sanctioned the sensitivity of the content. It is fundamental for maintaining the integrity of the classification process and ensuring that proper protocols are followed when handling classified information.

The other choices do not accurately reflect the purpose of the CAB. While summaries, expiration dates, and security control details are important aspects of document management, they are not contained within the classification authority block itself. The CAB's core function is to identify who authorized the classification and when it was classified, which is essential for compliance with information security protocols.