The random redirection of sound in many directions.

• A. Refraction
• B. Diffraction
• C. Absorption
• D. Scattering

Answer: (D)

When sound encounters rough or irregular surfaces or a heterogeneous medium, its energy is redirected in many directions rather than a single predictable path. This random redistribution of sound energy is called scattering. It explains why sound from a source can be heard coming from many directions after hitting a rough wall or traveling through a cluttered environment, creating a diffuse acoustic field.

In contrast, refraction involves a smooth change in direction when sound passes from one medium to another with a different speed, not typically in many random directions. Diffraction is the bending of waves around edges or through openings, not a general random redirection. Absorption is the loss of sound energy to the medium or objects, not a change in direction.