The provision for the control law that states the content of any radio message should be divulged only to the addressee is known as what?

• A. Secrecy of communication
• B. Privacy of messages
• C. Confidentiality of broadcast
• D. Security of transmissions

Answer: (A)

The main idea here is keeping the content of a radio message secret to the intended recipient. This is secrecy of communication—the principle that what is sent should not be divulged to anyone other than the addressee.

Secrecy of communication is the best fit because it directly describes restricting access to the message content to the intended recipient only. Privacy of messages is similar in spirit but is a broader term; confidentiality of broadcast implies keeping broadcasts private, which isn’t the usual framing for a one-to-one radio message. Security of transmissions focuses on protecting the channel itself from interception or tampering, not specifically on limiting disclosure to the addressee.