What is the primary purpose of derivative classification?

The primary purpose of derivative classification is to ensure the protection of national security information. Derivative classification involves incorporating or restating information from existing classified sources into new documents or materials while adhering to classification guidelines. This process helps maintain the integrity of sensitive information and prevents unauthorized access or disclosure that could compromise national security.

By properly classifying documents, individuals are safeguarding not only the specific contents but also the broader implications of that information for national defense and security. This practice ensures that classified information remains protected and only accessible to individuals with appropriate clearance and need-to-know, thus upholding the principles of information security that are crucial for national protection.

In contrast, the other options do not align with the specific objectives of derivative classification. Creating new legal documents, archiving past classified materials, or promoting open access to government information do not adequately capture the essence of derivative classification, which fundamentally revolves around the protection and proper handling of classified national security information.