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

The property 'has developmental potential involving' applies to instances of 'anatomical entity', and 'immaterial anatomical entity' is a subclass of 'anatomical entity'. Which class can appear as the value of 'has developmental potential involving' for instances of 'immaterial anatomical entity'?

A. atmospheric process
B. anatomical entity
C. continuant fiat boundary
D. letter

Answer: anatomical entity