Concept:Mass movement refers to the downslope movement of earth materials under gravity.
Its types include landslides, soil creep, and rockfalls.
Explanation:A landslide is the sudden movement of large rock debris or soil down a slope.
It occurs when underlying weak rock layers give way, causing the material above to slide.
A steep slope is a condition that promotes mass movement, not a type of it.
Hills and tablelands are landforms, not processes of mass wasting.
Therefore, only landslides fit as a type of mass movement or mass wasting.
Answer:B. landslides