Task: Property Constraint Reasoning (ontology: Earth_Environment/SWEET)

The property 'has volume' applies to instances of 'geometrical object 3d', and 'sphere' is a subclass of 'geometrical object 3d'. Which class can appear as the value of 'has volume' for instances of 'sphere'?

A. Ca-hureaulite
B. volume
C. light frost
D. Morelandite

Answer: volume