Which action should the GMDSS radio operator take in a Distress situation when embarking in survival craft?

Correct Answer: Option A — Switch on EPIRB and SART immediately and leave on.

Upon abandoning ship, the GMDSS operator must immediately activate the EPIRB and SART. These devices are critical for locating survivors; the EPIRB provides satellite-based distress alerting, while the SART provides a visual homing signal on radar displays for approaching rescue units.