Final answer:
In an inclusive hierarchy, every supertype occurrence is included in at least one subtype occurrence.
Step-by-step explanation:
In the context of total completeness, in an inclusive hierarchy, every supertype occurrence is included in at least one subtype occurrence. This means that all objects of the supertype will have corresponding objects in the subtype.
For example, consider an inclusive hierarchy of animals. If the supertype is 'Animal' and the subtypes are 'Mammal' and 'Bird', every animal (supertype) will be either a mammal (subtype) or a bird (subtype), ensuring total completeness in the hierarchy.
Therefore, option A) Inclusive hierarchy is the correct answer.