Which of the following is NOT a function of derivative classification?

The choice indicating that conducting security reviews is not a function of derivative classification is correct. Derivative classification primarily involves the process of classifying information based on existing classified materials. This includes making determinations for information protection, marking documents for classification, and determining how long that classification should last.

Conducting security reviews, on the other hand, typically falls under broader security measures and compliance evaluations rather than the specific process of derivative classification. While it is essential for overall security protocols, it does not directly relate to the specific responsibilities and actions taken during the derivative classification process, which is focused on protecting sensitive information by recognizing and applying classification markings based on pre-existing classified documents.