What is the unit of measurement for sound intensity?

The correct unit of measurement for sound intensity is decibels. Decibels are a logarithmic unit that quantifies sound intensity or sound pressure level, and it is widely used in fields related to acoustics and audio engineering. The decibel scale effectively represents the large range of intensities and loudness levels that the human ear can detect, making it highly practical for measuring sounds in everyday life.

While watts measure power, which can be related to sound intensity in technical contexts, they are not the appropriate unit for directly expressing sound intensity itself. Hertz measures frequency, which is about the pitch of sound rather than its intensity. Volts relate to electrical potential and are not pertinent to measuring sound intensity. In summary, decibels are the recognized standard for expressing sound intensity, making it the correct answer in this context.