The correct response is:
"The size of the crater will be large if the energy used to move the object is large. The size of the crater will be small if the energy used to move the object is small."
This statement correctly explains that the energy of the falling object, which depends on factors such as its mass and the height from which it falls (potential energy), plays a significant role in determining the size of the crater left behind in the sand. More energy results in a larger impact, creating a bigger crater.