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

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

A. insect adult integumentary system
B. layer of dentate gyrus
C. female germ-line stem cell population maintenance
D. subdivision of skeleton

Answer: subdivision of skeleton