What concept is illustrated when a new document allows a reader to deduce classified information?

• A. Classified by
• B. Revealed by
• C. Inferred from
• D. Derived from

Answer: (B)

The concept illustrated when a new document allows a reader to deduce classified information is best captured by the term "derived from." When information is derived from a source, it indicates that the new document may have been created based on existing classified materials, but it can still lead to the exposure of sensitive content through inference.

In derivative classification, understanding how information can be extracted or inferred from existing classified data is crucial. This process means that while the new document itself may not contain explicitly classified information, it allows someone to piece together or deduce sensitive information based on what is known from the original sources.

This highlights the importance of careful consideration in the creation and dissemination of documents that relate to classified information, ensuring that classification guidance is appropriately followed to prevent the unintended revealing of sensitive information.