Answer: The correct answer is option(A).
Step-by-step explanation:
Regolith is defined as layer which is composed of heterogeneous, loose, uppermost deposits covering the solid rock. They complete different from soil. It includes dust, soil, broken rocks and other related material. They arenot only present on earth but on another terrestrial bodies also like : moon ,asteroids ,mars etc.
So, from the enlisted option the correct description of regolith is given by option(A). Hence, option(A) is correct.