What type of disclosure must be authorized to provide hard copies of classified military information to foreign governments?

The disclosure of hard copies of classified military information to foreign governments is categorized as documentary disclosure. This type of disclosure involves the transfer of tangible documents, such as reports, manuals, or printed materials, which contain classified information. The process requires stringent authorization to ensure that the sensitive nature of the information is adequately protected, and it must comply with laws and regulations governing the sharing of classified data.

In contrast, the other types listed, such as oral, digital, and verbal disclosures, pertain to different formats or methods of communication. Oral and verbal disclosures generally refer to spoken communications that do not involve any physical documentation. Digital disclosure might involve electronic formats, which are not the same as hard copies. Thus, documentary disclosure specifically addresses the delivery of hard-copy materials, making it the correct choice in this context.