In my opinion, the correct answer among the choices presented above is option B. A mass movement that involves the sudden movement of a block of material is called a slide. A mass movement is a movement of an object caused by gravity.
A slump is when a block of material quickly slides down a little on a hill or even a flat land. It happens when there is a break between supported material and a block of soft sediment.
Example below ,,
Hope this helps you !! <3 I'm not sure if I explained it so well but eh
