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

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

A. elemental molecule
B. cyclic organic group
C. material anatomical entity
D. maintenance of cell number

Answer: material anatomical entity