Explanation: When reviewing received Distress messages, especially on a Digital Selective Calling (DSC) radio, it is crucial to avoid accidental transmissions. **A) Take steps not to accidentally send a DSC acknowledgement or relay.** This is correct. DSC systems are designed for automated distress alerting. Accidentally sending a DSC acknowledgement could signal to other stations or rescue authorities that the distress has been handled, potentially delaying genuine assistance. Similarly, an accidental relay could create confusion or a false alarm. FCC rules and international regulations strictly prohibit transmitting false distress alerts or acknowledgements. Operators must be careful not to press the wrong buttons while navigating menus or reviewing messages. **B) Press the “Call” key when finished.** This is incorrect and potentially dangerous. The "Call" key is used to initiate a transmission. Pressing it after reviewing a distress message could accidentally send a distress relay, a routine call, or otherwise interfere with critical emergency communications. **C) Always save the message.** While saving important messages can be good practice, it is not a *precaution* against accidental *transmission* when reviewing a distress message. It's an operational choice, not a safety measure to prevent unwanted signals. **D) No precautions are necessary.** This is incorrect. Operating radio equipment, especially concerning distress communications, always requires caution and adherence to proper procedures to prevent misuse or interference.