The appropriate definition of a rock is choose one: a. a solid organic substance in which atoms are arranged either in an orderly pattern (crystalline) or as irregularly shaped grains. b. an aggregate (mixture) of minerals. c. a solid in which atoms are not arranged in an orderly pattern. d. a carbon-containing compound that resembles those in living organisms.

Option (B) is correct answer.

A: Minerals is defined as the solid substance in which atoms are arranged in a uniform pattern.

B: Rock is an aggregate mixture of minerals.

C: Glass is said to be that solid in which atoms are not arranged in an orderly pattern.

D: Organic Chemicals are carbon-containing compounds which occur in living organisms or have properties which resembles to the compounds in living organisms.

Therefore, the aggregates of minerals grains or crystals or masses of natural gas is said to be rock. Three types of rock is present a) sedimentary rocks b) ingenious rock c) metamorphic rocks.