Which statement about wave properties is accurate?

The statement that waves can interfere constructively or destructively is accurate because interference is one of the fundamental behaviors of waves. Constructive interference occurs when two waves meet in phase, meaning their crests and troughs align, resulting in a wave with a greater amplitude. This phenomenon often leads to louder sounds in acoustics or brighter light in optics. Conversely, destructive interference occurs when two waves are out of phase, with one wave's crest aligning with another's trough, effectively canceling each other out and resulting in a wave of lower amplitude or even silence in the case of sound. This property is essential in various applications, including noise-cancellation technologies and the study of wave behavior in physics.

The other statements describe different aspects of wave behavior that may not hold true universally. For example, wave amplitude does not impact the speed of sound, which is primarily determined by the medium through which the sound travels. Similarly, wave speed varies depending on the medium, such that sound travels at different speeds in air, water, and solids. Wavelength is also not independent of frequency, as they are related through the wave equation, where wave speed equals frequency multiplied by wavelength. Thus, the correct choice accurately captures a key characteristic of wave interactions.