An individual who has possession of, or is otherwise charged with, the responsibility for safeguarding classified information.

• A. Custodian
• B. Courier
• C. Cyber Incident
• D. CPI

Answer: (A)

Safeguarding classified information is entrusted to the custodian, the person who has possession of or is charged with responsibility for protecting those materials. A custodian is the designated holder of the information’s protection duties, ensuring proper handling, storage, access controls, and reporting of any issues. A courier’s role is to move material from place to place, not to assume ongoing safeguarding responsibilities after transfer. A cyber incident is an event, not a person, and CPI refers to a classification of information or program material, not an individual. Therefore, the custodian best fits the description.