The correct answer is D. Huyghens’ principle.
Huyghens’ principle states that every point on a wavefront acts as a source of secondary wavelets, and the new wavefront is the envelope of these secondary wavelets. This principle can be used to explain a wide range of phenomena, including diffraction, interference, and polarization.
The laws of reflection and refraction are based on the idea that light travels in straight lines. The inverse square law states that the intensity of light is inversely proportional to the square of the distance from the source. These laws are not sufficient to explain all of the phenomena that light exhibits, such as diffraction, interference, and polarization.
Huyghens’ principle is a more fundamental principle than the laws of reflection and refraction. It can be used to explain all of the phenomena that light exhibits, and it is also consistent with the laws of reflection and refraction.