Correct option is D
The correct answer is (d) Slow speed with soil.
Creep is a type of mass wasting process characterized by the slow, gradual movement of soil or regolith down a slope. It is one of the slowest forms of mass movement and occurs over an extended period, often going unnoticed unless observed over years or decades.
Creep is mainly associated with the soil layer rather than rock or ice. It happens due to repeated cycles of freeze and thaw, wetting and drying, or the activity of organisms, which cause soil particles to shift slowly downhill.
This process is typically very slow and involves small movements, leading to the tilting of trees, fences, and other structures on slopes.
Information Booster:
Mass wasting refers to the movement of soil, rock, and other debris downslope due to the force of gravity. It is a key process in shaping landscapes and occurs when the material's internal strength is overcome by gravitational forces. Here are the main types of mass wasting processes: