Which of the following correctly matches the radiotelephony term with its primary purpose?

Which of the following correctly matches the radiotelephony term with its primary purpose?

• A. Securite: distress; Pan Pan: routine traffic; Mayday: safety broadcast
• B. Securite: emergency medical; Pan Pan: safety warnings; Mayday: routine traffic
• C. Securite: routine weather; Pan Pan: safety warnings; Mayday: urgent message
• D. Securite: safety broadcast; Pan Pan: urgent message for safety; Mayday: distress

Answer: (D)

In radiotelephony, three call signals indicate levels of urgency and purpose. Securite is a safety broadcast, used to transmit important safety information such as navigational hazards or weather warnings to mariners. Pan-Pan signals an urgent situation that affects safety and requires prompt attention, but it is not an immediate life-threatening emergency. Mayday is a distress call, used when there is grave danger and immediate rescue is needed. The best match is Securite: safety broadcast; Pan Pan: urgent message for safety; Mayday: distress. The other options mix up these duties—for example, assigning medical, routine, or weather uses to the terms—so they don’t reflect the established purposes of each radiotelephony term.

In radiotelephony, three call signals indicate levels of urgency and purpose. Securite is a safety broadcast, used to transmit important safety information such as navigational hazards or weather warnings to mariners. Pan-Pan signals an urgent situation that affects safety and requires prompt attention, but it is not an immediate life-threatening emergency. Mayday is a distress call, used when there is grave danger and immediate rescue is needed.

The best match is Securite: safety broadcast; Pan Pan: urgent message for safety; Mayday: distress. The other options mix up these duties—for example, assigning medical, routine, or weather uses to the terms—so they don’t reflect the established purposes of each radiotelephony term.