What does the term "resolution" refer to in digital imaging?

The term "resolution" in digital imaging primarily refers to the sharpness and detail in an image. It is measured by the number of pixels contained within a given area, typically expressed in width by height (e.g., 1920x1080). Higher resolution means more pixels are used to create the image, which results in finer details and greater clarity. This is crucial in contexts where image quality is paramount, such as in photography, television, and digital design.

While the other options relate to important aspects of imaging, they do not define resolution. For example, the size of the image file relates to storage space and not the image quality directly, the amount of light pertains to exposure settings affecting brightness rather than sharpness, and color accuracy deals with how closely colors in the image represent the actual colors of the subject, which is not directly tied to resolution.