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

The property 'adjacent to' applies to instances of 'independent continuant', and 'immaterial entity' is a subclass of 'independent continuant'. Which class can appear as the value of 'adjacent to' for instances of 'immaterial entity'?

A. obsolete milet product
B. independent continuant
C. transient tracer
D. multi-species collection of organisms

Answer: independent continuant