Task: Property Constraint Reasoning (ontology: Sciences/Biology)

The property 'has skeleton' applies to instances of 'organism subdivision', and 'neck' is a subclass of 'organism subdivision'. Which class can appear as the value of 'has skeleton' for instances of 'neck'?

A. material anatomical entity
B. organic anionic group
C. epidermal cell division
D. polar solvent

Answer: material anatomical entity