Final answer:
The correct standard port for a digital signal on an LCD monitor is a DVI port on the video card. DVI is preferred for superior image quality compared to the older VGA, which transmits analog signals.
Step-by-step explanation:
When installing a new LCD monitor, you would typically look for a current standard port that transmits digital signals. In this case, c. A DVI port on the video card is the correct option. DVI, which stands for Digital Visual Interface, is designed to deliver a sharp, clear digital image. While DVI is a common choice, there are also other alternatives such as HDMI and DisplayPort, which are more modern and capable of carrying audio as well as video signals. VGA, on the other hand, is an older standard that transmits analog signals and does not support the same level of image quality as DVI and its successors.