Which kind of landslides occurs when a top layer of soil is displaced

translational is correct

Explanation:

Boulders tumbling down a slope would be a fall or topple. In translational slides, surface material is separated from the more stable underlying layer of a slope. An earthquake may shake the loosen top layer of soil from the harder earth beneath in this type of landslide.

Translational slides

Explanation:

After an earthquake, the top soil of the land may be displaced, this is a translational slide.