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

The property 'biotically interacts with' applies to instances of 'material entity', and 'processed material' is a subclass of 'material entity'. Which class can appear as the value of 'biotically interacts with' for instances of 'processed material'?

A. piece(s) of cow
B. ice age
C. material entity
D. neurotoxin

Answer: material entity