Concept:Weathering loosens rock fragments that then gather at the base of slopes.
Explanation:On hillslopes, weathering breaks rocks into angular debris.
These fragments move downslope under gravity.
At the bottom of the slope, they accumulate into a pile called scree.
Scree consists of loose broken rock pieces at the foot of cliffs or slopes.
Creep is slow soil movement, pebbles are just small stones, and a levee is a river deposit.
So the correct option is scree.
Answer:D. screes