What does a character generator (CG) primarily do in television production?

A character generator (CG) is primarily responsible for adding text and graphics to the video feed in television production. This tool is essential for displaying information such as titles, lower thirds, and other graphical elements that enhance the visual storytelling of a broadcast. The CG allows operators to create dynamic and visually appealing graphics that are synchronized with the video content, providing viewers with important context and information, like names of speakers during interviews or scores during sports events.

The other options relate to different aspects of television production. For instance, adding background music is typically handled by audio mixing and editing equipment rather than a CG. Generating 3D models for animation is a function associated with animation software, not character generation. Finally, controlling camera movements involves camera control systems or operators, entirely separate from the functions of a CG. Thus, the key role of a character generator is to enrich the video presentation with text and graphics, making option C the correct choice.