The main colors in photography are red, green, and blue (RGB) (Option C). These colors form the basis of the additive color model used in digital imaging and photography. In RGB color photography, each pixel on a digital sensor or screen is composed of three primary colors: red, green, and blue. By varying the intensity of these three colors, a wide range of colors can be produced through additive mixing. For instance, combining red and green light produces yellow, red and blue light produces magenta, and green and blue light produces cyan. This RGB color system allows for accurate color reproduction in digital images and is essential in fields such as digital photography, television, and computer graphics. Understanding how these primary colors combine to create the full spectrum of visible colors is crucial for achieving high-quality color images in modern photography and imaging technologies.