Answer:
D. The hanging wall moves down relative to the footwall.
Step-by-step explanation:
This is the option that best describes what happens at normal faults. A normal fault is a rupture in the Earth's crust in which one side of the fault moves downward with respect to the other side. The side that slides downward is called the hanging wall, while the other side is called the footwall. In this type of fault, the hanging wall moves down relative to the footwall. Despite the name, it is important to remember that a "normal" fault is no more common or better than any other kind of fault.