Derivative classification includes all of the following except:

Derivative classification involves using existing classified information to create new classified material by maintaining the same classification level and applying the appropriate markings. The correct answer, which identifies the exception, refers specifically to the activity of carrying forward a determination into new material. While derivative classification does indeed involve referencing established classifications, the act of simply carrying forward a determination without additional context does not align with the activities typically associated with derivative classification.

Categorizing new information involves evaluating new data in relation to existing classified material, while creating summaries of classified documents requires synthesizing information from classified sources into new documents that also retain appropriate classifications. Reviewing existing classified information is an essential part of understanding the context and ensuring that the appropriate classification levels are maintained. Therefore, these activities are integral to the derivative classification process, while merely carrying forward a determination does not sufficiently engage the nuance involved in evaluating and applying classification standards.