Which of the following is a feature of the PNG file format?

• A. Supports animation
• B. Allows for gradual compression
• C. Supports transparent backgrounds
• D. Limited to 256 colors only

Answer: (C)

The PNG file format is well-known for its ability to support transparent backgrounds, which makes it particularly advantageous for web graphics and images where a seamless blend with the background is desired. This transparency feature allows parts of the image to be fully or partially transparent, enabling layers of images in graphic design and creating polished visual effects.

Other features associated with PNG include lossless compression, which retains the original image data without degradation of quality, and the ability to support a wide color range (more than 256 colors), unlike formats that might limit color use. Therefore, while many formats have specific strengths, the transparency feature of PNG is a significant reason it is favored for digital media that requires adaptable graphics.