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

The property 'composed primarily of' applies to instances of 'material entity', and 'object' is a subclass of 'material entity'. Which class can appear as the value of 'composed primarily of' for instances of 'object'?

A. drug
B. material entity
C. decreased variability of size
D. adiabatic process

Answer: material entity