What type of transmission is indicated by the term NTSC?

The term NTSC refers to the National Television System Committee, which developed a color television standard for analog broadcasting in the United States and many other countries. Specifically, NTSC designates an analog fast scan color TV signal characterized by specific parameters such as frame rate (29.97 frames per second) and resolution (typically 480i). This standard was predominant in analog television broadcasting before the transition to digital.

In understanding the context of the other options, while 'A' discusses a static circuit which is not related to television transmission, and 'B' suggests a mode for satellite uplink that does not pertain to the NTSC standard, 'D' mentions a compression scheme which is more relevant to digital signals rather than the analog nature of NTSC. Hence, option C accurately captures the essence of what NTSC represents in the context of television broadcasting.