In a BLANK fault, the hanging wall moves down relative to the footwall. A. hanging
B. transform
C. reverse
D. normal

The hanging wall moves down relative to the footwall at a normal fault.

Explanation:

A is not correct because hanging fault doesn't exist.

B is not correct because at this type of fault the hanging wall and the footwall slide past each other.

C is not correct because at this type of fault the hanging wall moves up relative to the footwall.

D is correct because at this type of fault the hanging wall is moving down relative to the footwall, so the hanging wall is positioned at a lower elevation than the footwall.