The event that provides evidence that matter can reflect waves is option C, where a laser beam bounces off a series of mirrors. This phenomenon is known as reflection and is a fundamental property of waves, including electromagnetic waves such as light. When a wave encounters a surface, it can either be absorbed, transmitted, or reflected. In the case of reflection, the wave bounces off the surface and changes direction.
In the example given in option C, the laser beam is reflected off each mirror at an angle equal to the angle of incidence, according to the law of reflection. This behavior is not unique to laser beams or even light waves but applies to all types of waves, including sound waves and water waves.
Reflection is an important phenomenon in many areas of science and technology. For example, it is used in optics to create mirrors and lenses that can focus or redirect light. It is also used in acoustics to design concert halls and other spaces that enhance sound quality.