Task: Class Definition Understanding (ontology: Earth_Environment/GeoCoreOntology)

Which of the following definitions best describes 'amount of rock'?

A. the concept is an 'earth material' that is consituted by an aggregate of solid particles but is not consolidated into a 'rock' it self.
B. An amount of rock is an 'earth material' that is a naturally occuring, inorganic, solid, homogeneous chemical compound with a crystalline structure.
C. the concept is an 'earth material' that is fluild.
D. An the concept is a solid consolidated 'earth material' that is 'constituted by' an aggregate of particles made of mineral matter or material of biological origin.

Answer: An the concept is a solid consolidated 'earth material' that is 'constituted by' an aggregate of particles made of mineral matter or material of biological origin.