Question: Fill in the blanks with the most appropriate option that follows:
Ontologies are _____________ equated with taxonomic hierarchies of classes, class definitions, and _____________ subsumption relation, _____________ ontologies need not be limited to _____________ forms.
The “subsumption relation” refers to a definite entity. Hence, it must take the definite article “the”. This eliminates options 1, 3 and 4.
A demonstrative pronoun is required to attribute to the forms of “hierarchies of classes, class definitions and the subsumption relation”. Thus, the correct pronoun to use would be “these”. Eliminate option 2 with “such”.
Hence, the correct answer is option 5.