Explanation: LRIT (Long-Range Identification and Tracking) utilizes the ship's Inmarsat-C terminal as its primary communication medium for transmitting automated position reports to shore. Therefore, if LRIT information is not being broadcasted correctly, the most logical first action is to verify the operational status of the Inmarsat-C terminal, as it is the fundamental component responsible for sending this data. Options A and B are incorrect. A "Sat D box" is not a universally recognized or standard component for LRIT or GMDSS systems. Re-booting the AIS broadcasting unit (B) is irrelevant because AIS (Automatic Identification System) is a separate, short-range tracking system and does not handle LRIT's long-range satellite transmissions. Option C, verifying the Ship Security Alerting System (SSAS), is also incorrect; SSAS is an emergency alerting system, and its activation (accidental or otherwise) would not prevent LRIT's routine position reporting, even though SSAS also uses Inmarsat-C.