What is the main drawback of interlaced scanning compared to progressive scanning?

Interlaced scanning has a main drawback in that it results in lower motion clarity compared to progressive scanning. This is because interlaced scanning alternates the display of odd and even lines in a frame, which can lead to a visual effect known as "combing" during fast motion. As a result, moving objects can appear less sharp and may leave trailing artifacts, making it more difficult for the viewer to perceive details during rapid movements. In contrast, progressive scanning displays each frame in its entirety, providing smoother motion and greater clarity, especially for action sequences.

While interlaced scanning may have certain benefits, such as typically lower bandwidth requirements, the primary issue with it is the reduction in clarity for moving images. The other choices relate to aspects like resolution, color reproduction, and frame rate, which do not directly address the clarity of motion as impacted by interlacing.