In atmospheric perspective, the application of bluish-gray gives the appearance of a distant haze when creating a landscape scene. The Option B.
This bluish-gray effect occurs because of the way our eyes perceive and the atmosphere scatters different wavelengths of light. When we look at distant objects, especially in natural landscapes, the atmosphere scatters shorter wavelengths (like blue and violet) more than longer wavelengths (like red and orange).
As a result, distant objects tend to appear bluish-gray due to this scattering phenomenon. Artists use this knowledge to create depth and distance in their paintings.
By applying bluish-gray tones to distant elements in a landscape, they can simulate the atmospheric haze that occurs in reality, making objects appear farther away and creating a sense of depth in the painting.