Which of the following is a type of expansion card that can be used to enhance video capabilities?

The correct answer is a capture card, which is designed specifically to enhance video capabilities in a computer system. Capture cards enable the user to capture and record video from various sources, such as cameras or gaming consoles, and often come with additional features that allow for video processing and streaming.

This type of expansion card is particularly valuable for video production, game streaming, and other multimedia applications, as it allows for high-quality video input and output, thus improving the overall visual performance of the system.

Other expansion cards listed, like a RAID adapter, are focused on storage management and improving data access speeds, while modem adapters are primarily used for internet connectivity through dial-up connections, and NICs (Network Interface Cards) facilitate network connections. None of these options are specifically designed for enhancing video capabilities the way a capture card is.