To which one of the following processes is term CMYK related?

1. The question asks to which process the term CMYK is related. 2. CMYK stands for Cyan, Magenta, Yellow, and Key (Black). 3. This is a subtractive color model used in color printing. It describes how inks on a typically white substrate subtract brightness to create a range of colors. 4. Offset printing is a common printing technique that heavily relies on the CMYK color model to reproduce color images and text. 5. Railway Signalling, Navigation, and Electronic voting machines use different technologies and principles, not directly related to the CMYK color model.