Explanation: A DSC Urgency priority call is designed to alert as many stations as possible, both coast stations and other ship stations, to a developing situation that affects the safety of a vessel or person. By sending the call simultaneously to "all stations," the transmitting vessel ensures maximum awareness of the urgent situation. This broad broadcast increases the likelihood that the message will be received by a station able to provide assistance or relay critical information without delay. Options A, B, and C describe more restrictive or delayed methods of communication. An urgent situation requires immediate and widespread notification, making a general "all stations" broadcast the appropriate method, rather than sequential, individual, or limited targeting.