Protecting classified information from unauthorized disclosure by ensuring proper classification markings appear on all classified information when creating a new classified document based on one or more authorized sources is the role of a(n) .

Designated Classification Authority (DCA)

Derivative classifier

Explanation:

Protecting classified information from unauthorized disclosure by ensuring proper classification markings appear on all classified information when creating a new classified document based on one or more authorized sources is the role of a Designated Classification Authority or Derivative Classifier.

This is usually done by paraphrasing and rewriting which could be sometimes into new coded languages/writings in relation to the source information.

The role described is a derived classifier.

A derived classifier is an official who is in charge of including and generating classified documents with all the protocols that it requires to have this qualification of "classified document". Other functions of a derived classifier are:

Based on the above, the correct answer is Derived Classifier.

Learn more in: link