Explanation: A NAVTEX receiver is a specialized device designed solely for receiving Maritime Safety Information (MSI) via terrestrial radio broadcasts using narrow-band direct-printing (NBDP) telegraphy. SafetyNET™ is an entirely separate, satellite-based system for broadcasting MSI, utilizing different technology (e.g., Inmarsat-C terminals). A NAVTEX receiver has no inherent capability to receive SafetyNET™ messages, nor can it automatically switch between these two distinct communication systems. They operate on different principles and require different receiving equipment. Therefore, a NAVTEX receiver running out of paper cannot automatically switch to SafetyNET™. Options A, B, and C describe realistic outcomes for a paper-based NAVTEX receiver: it will be unable to print messages (A, C), effectively causing broadcasts to be missed, and many electronic devices, especially safety-critical ones, are designed to alert the user with audible or visual alarms (B) when they cannot perform their primary function due to a consumable running out.