Final answer:
Gravity is indeed the energizing force in mass wasting, as it causes the movement of rock and soil downhill when stability is compromised.
Step-by-step explanation:
The statement that gravity is the energizing force in mass wasting is true. Mass wasting, also known as landslide or slope movement, refers to the downward movement of rock and soil due to gravity. No other external force is needed to initiate this movement once the force of gravity exceeds the resistance of the material on the slope. Essential Knowledge 3.C.1 notes that gravitational force describes the interaction between objects that possess mass. When such materials become unstable, gravity causes them to move down slope.