Which of the following classification levels defines the information that, if disclosed to the
unauthorized parties, could be reasonably expected to cause exceptionally grave damage to the
national security?

A.
Secret information

B.
Unclassified information

C.
Confidential information

D.
Top Secret information

Explanation:
Top Secret information is the highest level of classification of material on a national
level. Such material would cause “exceptionally grave damage” to national security if publicly
could be expected to cause serious damage to the national security, but it is not the best answer
information, technically, is not a classification level, but is used for government documents that do
not have a classification listed above. Such documents can sometimes be viewed by those without
security clearance.