Which of the following classifications is typically the lowest level of classified information?

The classification typically recognized as the lowest level of classified information is Confidential. This classification is used to protect information that, if disclosed, could reasonably be expected to cause damage to national security. The fundamental goal of the Confidential classification is to ensure that sensitive information is safeguarded while still allowing for necessary access to support national interests.

In contrast, Top Secret and Secret classifications represent higher levels of sensitivity and potential damage to national security if the information were compromised. Restricted is not a formal classification level under the standard classification system utilized by the U.S. government but may refer to information that is controlled or limited for security purposes rather than being classified in the same way as Confidential, Secret, or Top Secret. Therefore, among the formal classifications, Confidential is indeed the lowest level.