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

The property 'channel for' applies to instances of 'anatomical conduit', and 'foramen primum' is a subclass of 'anatomical conduit'. Which class can appear as the value of 'channel for' for instances of 'foramen primum'?

A. hydrolase activity
B. glial cell activation
C. organism substance
D. sulcus for Meckels cartilage

Answer: organism substance