Explanation: A graphics card's sole function is to process and output visual information to a display monitor. It has no direct involvement in the printing process, such as sending data to the printer, managing consumables, or handling paper. A defective graphics card would primarily affect what you see on your screen, not whether the printer itself can physically produce a document. In contrast, options B, C, and D are all direct and common reasons for a printer not working. A frozen printer queue (B) indicates a software issue where print jobs are stuck. Being out of toner or ink (C) means the printer lacks the material to create the image. A paper jam (D) physically obstructs the paper path, preventing printing.