What describes digital images' data representation?

• A. Analog and continuous
• B. Numeric and discrete
• C. Color-only
• D. Photographic

Answer: (B)

Digital images are described by numeric, discrete data. They’re formed by sampling a picture into a grid of pixels, and each pixel stores a numeric value that represents brightness and color (for color images, separate values for red, green, and blue). Because both the spatial grid and the color levels are quantized to finite steps (like 0–255 per channel), the data is inherently discrete rather than continuous. This distinguishes digital representation from analog, where values vary smoothly. It’s about how the image data is stored and processed, not merely about color or the photographic medium.