A wave displacing particles perpendicular to its motion is a transverse wave, so option b is correct. Transverse waves involve particle motion at right angles to wave travel, unlike longitudinal waves where particle motion is parallel.
When a wave causes particles in a medium to be displaced perpendicular to the direction of the wave's motion, it is known as a transverse wave. The correct answer to the question is option b: transverse wave because of the direction in which the particles are displaced.
In a transverse wave, the particles of the medium oscillate up and down, or side to side, which is at right angles to the direction in which the wave is traveling. This is different from a longitudinal wave, where the particles move back and forth in the same direction as the wave travels, creating areas of compression and rarefaction.
if the displacement of particles is perpendicular to the wave motion, we are dealing with a transverse wave. Examples include waves on a string or ripples on the surface of water.