Which of the following formats is primarily used for animated graphics?

The choice of .GIF as the format primarily used for animated graphics is accurate because the Graphics Interchange Format (GIF) is specifically designed to support simple animations. This format allows users to create short loops of images, which can be played in quick succession to produce the effect of movement. It supports up to 256 colors and allows for transparency, making it widely used for web graphics and social media due to its ability to display animations in a small file size.

While .JPEG/.JPG is great for still images, particularly photographs, it does not support animation at all. The .MPEG format is primarily used for video compression and is not typically associated with single-frame animated graphics. Lastly, .PICT is an older file format related to Mac systems and is primarily used for images, not animations. Thus, .GIF stands out as the optimal choice for animated graphics.