Answer:
The RGB color model describes the tool used to add more depth unto the secondary colors of a photo.
Explanation:
The RGB color model is an additive color model in which red, green, and blue light are added to increase the intensity of these primary colors. While the RGB color model is best suited for on-screen applications, it can be applied in conventional photography. With the RGB color model, you can make any color or combination of colors of your choice. Therein lies its greatness.