Final answer:
Derivative Classification occurs when information that is individually unclassified or classified at a lower level may be classified at a higher level if the combined information reveals an additional association or relationship.
Step-by-step explanation:
Derivative Classification occurs in some circumstances when information that is individually unclassified or classified at a lower level may be classified at a higher level, only if the combined information reveals an additional association or relationship. It involves creating additional classification levels based on the content of the information.