Answer: Option (b) is correct.
Explanation:
Frost wedging occurs at extremely cold weather where continuously water seeps into the cracks, freezes and expands causing a break into the rock.
Mass wasting is the downward movement of sand, soil, and rocks due to the force of gravity. Mass wasting occurs because the gravitational force acting on the slope becomes greater than its resisting force.
Aeolian bands are related to the wind force because of which the sand and other particles move form one place to another.
Glaciation is the process of occurrence of glaciers and the formation of shape of the landscape around them.
Thus, it can be concluded that mass wasting is caused by gravity.
