A. Determining whether information has been classified previously
B. Marking the information to show its classified status.
C. Carrying forward that determination into new material.
D. Making the initial determination that information requires protection against unauthorized disclosure in the interest of national security
Correct answer: D. Making the initial determination that information requires protection against unauthorized disclosure in the interest of national security
The correct answer is "Making the initial determination that information requires protection against unauthorized disclosure in the interest of national security" because this is a function of original classification, not derivative classification. Derivative classification involves applying existing classified information to new documents or materials, whereas the initial determination of whether information should be classified is part of the original classification process.