Upon receipt of SafetyNETTM messages of the Distress or Urgency category on the ship's EGC receiver, what action is required by the GMDSS Radio Operator?

Correct Answer: Option B — Manually reset the alarm.

SafetyNET messages categorized as Distress or Urgency trigger an audible alarm on the EGC receiver to ensure immediate operator attention. Per IMO performance standards, the operator must manually acknowledge and reset this alarm after reading the message to confirm receipt and silence the alert, ensuring no critical information is missed.