Which term describes an image made up of colored squares arranged on a grid?

• A. Vector
• B. Bitmap
• C. Gradient
• D. Icon

Answer: (B)

Raster graphics describe images built from a grid of pixels, with each square representing a pixel and assigned a color. When you look closely, you see the image as a mosaic of colored squares, and this structure makes it a bitmap. This contrasts with vector graphics, which define images using mathematical paths and can be scaled without losing sharpness, and with gradients, which are smooth color transitions rather than discrete squares. An icon is just a small image and can be stored as either a bitmap or a vector; what matters here is how the image is constructed—the grid of colored squares points to a bitmap. So, the term that describes an image made up of colored squares arranged on a grid is bitmap.