Classified materials must be delivered to which type of representative in a foreign country?

Classified materials must be delivered to a US designated government representative in a foreign country because this ensures that sensitive information is handled in accordance with established security protocols and guidelines. The US government has specific regulations and procedures for the transfer and safeguarding of classified information, and designating a US government representative ensures that only authorized personnel are involved in the handling and dissemination of such material.

This approach mitigates risks associated with security breaches and maintains control over who has access to classified content, thus protecting national security interests. The other types of representatives listed do not have the same level of authorization and responsibility concerning classified materials, making the involvement of a US designated government representative critical for appropriate handling and accountability.