VGA (Video Graphics Array) is a legacy 15-pin connector used for transmitting analog video signals. VGA was commonly used to connect monitors to computers, but it has been largely replaced by more modern digital interfaces like DVI and HDMI. C . VGA: A legacy 15-pin connector used for analog video signals. Why the other options are incorrect: A . DisplayPort: DisplayPort is a newer digital interface and does not use a 15-pin connector. B . DVI: DVI (Digital Visual Interface) is a digital connector used for video signals but does not have 15 pins. D . HDMI: HDMI is also a digital interface for audio and video, but it uses a different connector with no 15 pins. This topic relates to the Hardware domain in the CompTIA A+ Core 1 exam.