Which of the following describes chrominance?

Chrominance is specifically related to the color information in a video signal and encompasses two critical components: hue and saturation. Hue refers to the type of color (such as red, green, blue, etc.), while saturation indicates the purity or intensity of that color. This definition makes option B the correct choice, as it clearly articulates that chrominance includes both the quality of the color represented in the video and the strength of that color.

The other options pertain to different aspects of video and image quality. Brightness, mentioned in option A, refers to luminance, which measures the level of light emitted or reflected in the image but does not encompass color. Option C addresses resolution, which is about the detail an image holds—higher resolution means more image detail, but it is not directly related to color information. Lastly, option D refers to light intensity, another aspect tied to luminance rather than chrominance. Thus, B correctly identifies what chrominance is all about within the context of video and color theory.