What is the study of the production and propagation of sound waves called ?

Acoustics

The correct answer is option 4. Acoustics.

The study of the production and propagation of sound waves is called Acoustics.

Acoustics is the branch of physics that deals with the study of sound, including its production, transmission, and effects. It encompasses various phenomena related to sound waves, such as vibration, resonance, and the behavior of sound in different mediums. Acoustics has applications in numerous fields, including music, engineering, architecture, communication, and medicine.