The example of a transverse wave among the options provided is:
A. Water waves
Explanation:
1. Transverse waves are characterized by the oscillation of the medium perpendicular to the direction of wave propagation.
2. In the case of water waves, the disturbance in the water surface moves up and down (perpendicular to the direction of travel), making it a transverse wave.
3. Water waves exhibit a clear crest (highest point) and trough (lowest point) pattern, typical of transverse waves.
Therefore, among the given options, water waves best exemplify a transverse wave due to their up-and-down motion on the water's surface, perpendicular to the wave's direction of propagation.