Answer :

W0lf93
The correct option is B. Regolith is a layer of loose, heterogenous material covering solid rock. It include soil, dust, broken rock and other related materials and can be found in the earth, some asteroids, mars, moon and other terestial planet. Moon regolith occurs as a mixture of powdery dust and broken rocks.
Harambe2016
Regolith is a layer of various loose materials that cover solid rock made up of dust, rocks, and other sediment. It can be found on several planets. Moon Regolith is made up of primarily dust and broken rocks. Your answer should be B. 

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