Which term refers to communications that require safeguarding?

• A. Classified
• B. External communication
• C. Brevity
• D. Greenwich Mean Time

Answer: (A)

Communications that require safeguarding are classified. Classifying information marks it as restricted to authorized personnel and dictates protective handling, storage, and transmission with controls like need-to-know and encryption. The other terms don’t inherently imply security: external communication just means talking to outside entities, brevity focuses on concise wording, and Greenwich Mean Time is a standard time reference for coordinating transmissions.