what type of wave is this? transverse wave longitudinal wave

Brief Explanations:

In a transverse wave, the particles of the medium move perpendicular to the direction of wave propagation. In the image, the wave is moving horizontally (as indicated by the arrows) and the displacement of the medium (represented by the up - down motion of the wave pattern) is perpendicular to this direction. In a longitudinal wave, particles move parallel to the wave propagation direction.

Answer:

A. Transverse wave