What is usually the first step for a GMDSS Radio Operator to take when initiating a distress priority message via INMARSAT?

Correct Answer: Option C — Pressing a "Distress Key" on the equipment

Activating a dedicated distress key automatically formats and transmits a priority-preempting distress alert through the Inmarsat system. This direct hardware action eliminates human error and instantly routes life-critical data to the designated Coast Earth Station and Rescue Coordination Center.