Which video system features the highest resolution?

The choice of XVGA is the most accurate, as it is characterized by a higher resolution compared to the other options listed. XVGA, or Extended Video Graphics Array, typically offers a resolution of 1024 x 768 pixels or higher, depending on the specific implementation. This stands in contrast to the other standards.

SVGA (Super Video Graphics Array) generally supports resolutions up to 800 x 600 pixels, making it less capable than XVGA. XGA (Extended Graphics Array) usually offers a resolution of 1024 x 768 pixels but does not extend beyond that, which defines its limits. VGA (Video Graphics Array) is even lower, with a maximum resolution of 640 x 480 pixels.

Thus, XVGA's designation indicates a superior resolution capability, making it the highest among the listed options.