In context of derivative classification, what does "Revealed by" refer to?

"Revealed by" in the context of derivative classification refers specifically to information that is derived from classified sources through methods such as direct quotation, paraphrasing, or restating the content of those sources. When information is extracted in this way, it maintains its original classification level. This means that even if the information is reformulated or slightly altered, it still carries the need for protection based on its source. Understanding this concept is crucial for adhering to classification guidelines, as it ensures that sensitive information is not inadvertently declassified or disclosed when it should remain protected.

The other choices do not accurately capture the essence of "Revealed by" in relation to derivative classification. Publicly known information, individual-specific data, and information not requiring classification do not fall under the same guidelines as information derived from classified sources.