Final answer:
A cement walkway is most likely to diffuse light due to its rough and irregular texture.
Step-by-step explanation:
Light diffusion occurs when light waves scatter in different directions upon hitting a surface. In this case, the surface that is most likely to diffuse light is a cement walkway. The rough and irregular texture of the cement creates multiple surfaces for the light to bounce off in various directions, leading to diffuse reflection. The other options, a polished silver platter and a plane mirror, have smooth surfaces that would reflect light more directly, resulting in less diffusion.
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