A raster image is defined by which of the following characteristics?

• A. Raster image
• B. Vector image
• C. 3D model
• D. Metafile

Answer: (A)

Raster images are defined by being composed of a grid of individual pixels, each with its own color value. This pixel-based structure means the image’s detail and size are tied to its resolution: scaling up can reveal blocky pixels and loss of sharpness, while the image is crisp at its original resolution.

In contrast, vector images describe shapes with mathematical paths, so they scale cleanly to any size without losing clarity. A 3D model represents geometry as vertices and polygons in three-dimensional space, along with textures and shading. A metafile is a container that can hold different kinds of data, such as raster or vector content, plus metadata.

So the defining characteristic here is the pixel-based composition of raster images.