Final answer:
The color model shown on a desktop computer screen is RGB, which stands for Red, Green, Blue. RGB colors are created by mixing different intensities of red, green, and blue light.
Step-by-step explanation:
The color model shown on a screen like a desktop computer (the MacLab iMac) is the RGB color model.
In the RGB color model, colors are created by mixing different intensities of red, green, and blue light. Each pixel on the screen is made up of three sub-pixels: one red, one green, and one blue. By varying the intensity of each sub-pixel, the screen can display a wide range of colors.
On the other hand, the CMYK color model is used in printing. CMYK stands for Cyan, Magenta, Yellow, and Key (black). It is based on the concept of subtractive color mixing, where different pigments of ink are mixed to absorb certain colors of light. CMYK is used in printing because it can produce a wider range of colors than RGB.