Huygen's principle tells us that

Explanation

Huygen's principle is a method of analysis applied to problems of wave propagation both in the far field limit and in near field diffraction. It states that every point on a wavefront is itself the source of spherical wavelets, and the secondary wavelets emanating from different points interfere with each other. The new wavefront is the tangent to these secondary wavelets. Option C correctly captures this essence, making it the correct choice.Option A is incorrect because it refers to the dual nature of light-its wave and particle aspects, which is not explained by Huygen's principle. Option B is incorrect as it pertains more to the principles of geometric optics rather than the wave nature of light. Option D is incorrect because a correct option is indeed present.