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

The property 'regulated by' applies to instances of 'process', and 'planned process' is a subclass of 'process'. Which class can appear as the value of 'regulated by' for instances of 'planned process'?

A. obsolete tropical upwelling biome
B. immaterial entity
C. process
D. surfactant

Answer: process