What equipment can be used to transmit III information confidentially?

The correct choice refers to a fax machine as the appropriate equipment for transmitting III (Interstate Identification Index) information confidentially. Fax machines are designed to send documents over telephone lines in a secure manner that includes the possibility of utilizing dedicated phone lines or encryption methods to enhance security.

The use of a fax machine is particularly relevant for agencies where confidentiality and security of sensitive information are paramount, thereby ensuring that such data does not get intercepted during transmission. Fax machines, when used properly, allow for a more controlled and direct transfer of documents than other means, especially when handling sensitive electronic data.

In contrast, scanners and printers do not transmit information confidentially; instead, they are merely devices for creating digital copies of hard documents and printing them out. An email system can often introduce risks associated with security breaches, as emails can be intercepted or misdirected unless they are encrypted. Therefore, the fax machine remains a preferred choice in many regulated environments for the secure transmission of sensitive information.