These portable document format files are universally formatted to preserves the fonts, images, and layout of source documents:1 pointPNGRGBPDFnone of the above

The best answer to the question pertains to formats that maintain the integrity of documents across different devices and platforms. Among the options provided:

1. PNG - This is an image format, which does not preserve document layout or fonts.
2. RGB - This refers to a color model used for digital images and does not apply to document formatting.
3. PDF - This stands for Portable Document Format, specifically designed to ensure that a document looks the same on any device. It preserves fonts, images, and layouts effectively.
4. None of the above - This option is incorrect since PDF is a valid choice.

Final Answer

The correct answer is PDF.