Which of the following are used to distinguish between sound waves and other types of waves?

The correct choice is centred on acoustic variables, which are essential for distinguishing sound waves from other types of waves. Acoustic variables include parameters such as pressure, density, and particle displacement.

These variables specifically relate to the properties of sound waves and how they propagate through different media. For example, in sound waves, changes in pressure and density occur as the wave travels, which are not characteristics of electromagnetic waves or other forms of waves.

By analyzing these acoustic variables, one can definitively identify and characterize sound waves, making them fundamental in the field of sonography and acoustic studies. Understanding these variables allows professionals to measure and interpret the behavior of sound in various contexts, further establishing their importance in distinguishing sound waves from other wave types.