What method is used to create a tint in painting?

Creating a tint in painting is primarily achieved by adding white to a color. This process lightens the original hue, resulting in a softer, pastel-like version of the color. Tints are essential in art as they allow artists to create variations in tone and mood without altering the fundamental character of the original color. For instance, if an artist begins with a vibrant red and adds white, the resulting tint will be a lighter shade of pink, which can evoke feelings of delicacy or charm.

The other options involve different methods of color modification. Adding black creates a shade, darkening the color, while adding gray results in a tone, which alters the intensity and saturation of colors by neutralizing them. Adding another color can create various effects, including mixing to form secondary colors, but it does not specifically relate to the definition of creating a tint. Thus, adding white is the correct technique for creating a tint, as it is the established method for lightening a color in the visual arts.