Explanation: LRIT (Long-Range Identification and Tracking) is a system for tracking the global movement of SOLAS (Safety of Life at Sea) convention vessels. These vessels are required to automatically transmit their identity, position, and time information. This data is collected and transmitted via satellite communication systems. **C) is detected on the Inmarsat-C satellite network.** This is correct. Inmarsat-C is the primary satellite network used by LRIT systems to send these position reports from vessels to shore-based data centers. Inmarsat-C provides reliable, low-data-rate, store-and-forward communications suitable for periodic position reporting from anywhere in the world. **A) Can serve as duplicate back up information for AIS (Automatic Information System).** This is incorrect. AIS and LRIT are distinct systems. AIS operates over VHF, providing real-time, short-range collision avoidance information to nearby vessels and shore stations. LRIT uses satellites for long-range tracking by authorities for security and search and rescue. They are complementary, not duplicates. **B) Works on the same frequencies as AIS, but on different channels.** This is incorrect. AIS operates on specific VHF marine frequencies (around 162 MHz). LRIT, using the Inmarsat-C network, operates on satellite frequencies, typically in the L-band (around 1.5/1.6 GHz). They use entirely different frequency bands and technologies. **D) Puts out a polling signal on the Inmarsat B system.** This is incorrect. LRIT transceivers primarily *transmit* position reports to the Inmarsat-C network. While authorities can poll an LRIT unit for more frequent updates, this polling is typically directed *to* the Inmarsat-C unit, not initiated *by* the LRIT system itself as a general broadcast, and not on the Inmarsat-B system.