Mass movement that involves rock and soil moving as a single unit a. creep c. landslide b. mudflow d. slump

The right option is; d. slump  

Mass movement that involves rock and soil moving as a single unit is a slump.

A slump is a type of mass movement in which rock and soil materials are moved as a large consolidated block down a slope. Slumps usually occur when a slope is undercut without any support at its base or when there is addition of excessive weight (loading) to a slope that is not stable. Other causes of slumps include freezing and thawing, thorough wetting (such as by heavy rainfall) and earthquake shocks.  

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

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