The right answer is C- a spoon hitting the side of a bowl while mixing
A sound wave corresponds to the propagation of mechanical disturbances in an elastic medium (such as the shock between two materials). These disturbances are perceived, among others, by the human ear, which interprets them as sounds. The science that studies these waves is called acoustics.
Sound waves, unlike light waves, do not propagate in a vacuum. They are necessarily based on a material medium.
