Explanation: Following a DSC Distress alert with a voice transmission is crucial for several reasons, making all the provided options correct. DSC (Digital Selective Calling) primarily functions as an automated alerting system. While it efficiently notifies coast stations and nearby vessels of a distress, it conveys only fundamental information like your vessel's identity and position. A voice follow-up allows you to provide a detailed, real-time account of the emergency, including the nature of distress, extent of damage, number of people on board, and immediate assistance required. This additional information is vital for responders to understand the situation fully and plan an effective rescue. Furthermore, a voice transmission confirms the authenticity of the alert. Unfortunately, false DSC alerts can occur, and hearing a distressed voice provides immediate verification for coast stations and other mariners that the emergency is genuine and requires urgent attention, helping to avoid unnecessary deployments and focus resources efficiently.