Which of the following demonstrates that light waves are transverse waves?

Explanation

The correct answer is Polarization. Polarization filters light waves so that they oscillate in only one plane, which is evidence of their transverse nature, as only transverse waves can be polarized. This phenomenon highlights the perpendicular oscillations relative to the direction of wave travel, a characteristic unique to transverse waves.In contrast, Interference and Diffraction describe wave behaviors that do not directly indicate whether the waves are transverse or longitudinal. Similarly, Reflection alters the direction of waves but provides no information about their oscillation orientation, thus not demonstrating the transverse nature of light.