Which surface texture is more effective at reflecting sound?

A smooth surface is more effective at reflecting sound because smooth materials create fewer barriers and irregularities for sound waves, allowing them to bounce off more effectively. When sound waves encounter a smooth surface, they reflect at consistent angles, which can enhance the overall clarity and volume of the sound being reflected.

In contrast, textured surfaces can scatter sound waves due to the variations and irregularities in their composition. This scattering can lead to a loss of sound energy and reduce the effective reflection. Rough surfaces also absorb more sound, as their irregularities trap sound waves, leading to increased diffusion and decreased direct reflection. Vegetated surfaces, while they may absorb some sound frequencies, tend to be less effective at reflecting sound compared to smooth surfaces because the foliage and uneven ground can disrupt the sound waves even more, further reducing reflection.

Therefore, the correct choice highlights the characteristics of sound reflection in relation to surface textures, demonstrating that a smooth surface is optimal for reflecting sound effectively.