Final answer:
Individuals responsible for safeguarding classified information are not defined by the provided options; the Supreme Court ruled that the press has a partial right to print classified materials, with restrictions to protect national security.
Step-by-step explanation:
Individuals who possess or are charged with safeguarding classified information are neither solely recognized as couriers nor are they automatically Original Classification Authorities (OCAs). The Supreme Court has addressed the balance between national security and freedom of the press, determining that the press's right to print classified material is partial, meaning that the press may print such material only if it does not compromise troops or covert operatives (option b). This ruling acknowledges the press's role in a democratic society to inform the public while also recognizing the necessity to protect national security and sensitive operations.