In the context of computer graphics, what does filling a shape refer to?

Filling a shape refers specifically to coloring or shading the interior area of a geometric figure in computer graphics. This process enhances the visual representation of shapes, making them more distinct and visually appealing. For instance, when creating a graphical user interface or designing digital artwork, filling a shape with a solid color, gradient, or pattern helps convey information and aesthetics effectively.

In the context of other options, adding text descriptions relates to annotating images rather than affecting their interior color. Changing the resolution pertains to the clarity and detail of an image, not to the filling of shapes with color. Resizing an image involves altering its dimensions while maintaining its aspect ratio, and does not address the filling of shapes. Each of these other options deals with different aspects of image manipulation or enhancement, highlighting why filling a shape is specifically about the interior coloring.