What technique displays both the even and odd scan lines at the same time?

The technique that displays both the even and odd scan lines simultaneously is known as Progressive Scanning. In this method, each frame of video is drawn in its entirety, which means all lines are shown at once. This results in a smoother and more detailed image, particularly during fast motion, since it avoids the potential flicker and artifacts that interlaced scanning can produce. Progressive scanning is commonly used in modern video formats, enhancing the viewing experience by providing clearer images for everything from online streaming to high-definition broadcasts.

In contrast, interlaced scanning displays the even lines in one pass followed by the odd lines in another, which can lead to issues during fast-moving scenes. Field dominance pertains to the order in which these lines are displayed in interlaced formats, and frame interpolation is a technique used to create additional frames for smoother motion but does not concern how the original frames were scanned. Hence, progressive scanning is the correct and most effective method for displaying both even and odd lines simultaneously.