What is the classification concept used when multiple pieces of classified information are compiled into one document?

The correct concept related to the compilation of multiple pieces of classified information into one document is identified as classification by compilation. This concept specifically addresses the process of gathering various classified elements and consolidating them into a single document.

When classified data from different sources or categories are combined, the resultant document inherits the highest classification level of the individual components included. This ensures that the sensitive nature of the information is adequately maintained and that the national security interest is preserved when disseminating or handling the newly compiled document.

While there are other terms that might describe aspects of classification or information handling, classification by compilation accurately reflects the action of synthesizing multiple classified items into a cohesive whole, ensuring that the classification integrity is upheld across the newly formed document.