How should classified materials be handled during transport?

Handling classified materials during transport requires strict security measures to ensure that sensitive information is protected from unauthorized access or compromise. The correct approach is to secure classified materials in locked containers and ensure that they are monitored by personnel who have the appropriate security clearance. This method minimizes the risk of inadvertent disclosure and helps maintain the integrity and confidentiality of the classified information.

Moreover, using locked containers prevents unauthorized individuals from accessing the materials during transit. Additionally, having monitored, cleared personnel ensures that there are individuals present who understand the importance of security protocols and can respond effectively to any potential threats.

The other options suggest practices that would compromise the security of classified materials, such as leaving them unsecured, using clear containers that allow visibility, or transporting them alongside unclassified materials without special measures. These options would increase the risk of exposure and make it difficult to control access to sensitive information.