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

The property 'attached to part of' applies to instances of 'anatomical structure', and 'conceptus' is a subclass of 'anatomical structure'. Which class can appear as the value of 'attached to part of' for instances of 'conceptus'?

A. food production environmental monitoring zone 2
B. anatomical structure
C. organismal quality
D. research facility

Answer: anatomical structure