Final answer:
Confidential information can indeed be sent through secure methods like DCS and various mail services. The Supreme Court allows the press to publish classified material only if it does not endanger military or covert personnel.
Step-by-step explanation:
It is true that confidential information can be sent via various secure methods including the Defense Courier Service (DCS), First Class Mail, Registered Mail, and Certified Mail. These methods provide a level of security and tracking that is suitable for handling sensitive materials. Specifically, Certified Mail provides proof of mailing at the time of mailing and a record of delivery. However, when it comes to the press and handling classified material, the Supreme Court has ruled that the right of the press to print such material is partial; the press may print classified material only if it does not jeopardize troops or covert operatives (option b). This reflects a balance between the right to free speech and the need to protect national security.