Which of the following describes one characteristic of color?

Hue is a fundamental characteristic of color that refers to the attribute of colors that allows them to be classified as red, blue, green, etc. Essentially, hue is what we generally think of as color itself; it is the dominant wavelength of light that an object reflects or emits, and it describes the specific color family. For example, when talking about a color like "red," we are specifically referring to the hue of that color.

In contrast, texture is related to the surface quality of an object, shape pertains to the form or outline of an object, and space refers to the area around or between objects. While texture, shape, and space are important elements in visual arts, they do not specifically describe color itself. Thus, the emphasis on hue is what makes this choice particularly accurate in defining a characteristic of color.