Material moves in one large mass

a) slump
b) mudflow
c)landslide
d) creep

The correct answer is - a) slump.

The slump is a geological occurrence that happens when a larger consolidated mass, usually composed of rocks, moves down, or falls down, a steep slope as one large mass. The movement or falling of the material is relatively short, and it can be only few ten meters, or few hundred meters. The slumps occur suddenly, usually without any warning sign, apart from the loud cracking noise few seconds before the material moves or falls down.

lies are not protected speech because they have no social value.

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.