In derivation from multiple sources, the derivative classifier should apply the declassification instruction that provides the highest level of protection for the longest period.

In derivation from multiple sources, the derivative classifier should apply the declassification instruction that provides the highest level of protection for the longest period.

• A. Lowest level for the shortest period
• B. Some middle-ground approach
• C. No declassification instruction
• D. Highest level for the longest period

Answer: (D)

When information comes from multiple sources, you can’t assume a derivative can be released more openly than any single source allows. The safe, compliant approach is to apply the declassification instruction that offers the highest protection level and the longest duration. This conservative choice ensures the derivative remains under the strictest controls of all sources, so no part of it is declassified earlier than any source permits. By using the instruction with the greatest level of protection for the longest period, you maintain compatibility with every source’s restrictions and avoid inadvertently disclosing sensitive information. The other options would either relax protections too soon or fail to protect the material adequately.

When information comes from multiple sources, you can’t assume a derivative can be released more openly than any single source allows. The safe, compliant approach is to apply the declassification instruction that offers the highest protection level and the longest duration. This conservative choice ensures the derivative remains under the strictest controls of all sources, so no part of it is declassified earlier than any source permits. By using the instruction with the greatest level of protection for the longest period, you maintain compatibility with every source’s restrictions and avoid inadvertently disclosing sensitive information. The other options would either relax protections too soon or fail to protect the material adequately.