The type of unclassified material should always be marked with a special handling caveat is: For Official Use Only (FOUO).
For Official Use Only (FOUO) can be defined as an unclassified document that is mostly used by government agency. It often indicate in a document or material.
The designated space on a material that has or contain FOUO is used to prevent unathorized access to the unclassified material.
Inconclusion For Official Use Only is an unclassified material.
Learn more about For Official Use Only here: https://brainly.com/question/11332873
