What type of mass movement has materials that move in a single mass or block

The correct answer is slump

Explanation:

slump,  which occurs when rock and soil slide quickly down a steep slope. Such mass movement is common where road builders have cut highways through hills or mountains.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).