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

Correct Answer: Option B — By pressing a "Distress Button" or "Distress Hot Key(s)" on the equipment.

Inmarsat GMDSS terminals are designed for rapid distress alerting via a dedicated physical or software-based 'Distress' button. This action automatically formats the distress message with the vessel's identity and current position, bypassing manual dialing procedures to minimize human error during high-stress emergency situations at sea.