Final answer:
It is important to remember that RDF data on DBpedia is not static and can change over time, requiring adaptation of querying methods.
Step-by-step explanation:
In regards to the stability of RDF data on DBpedia, it is important to remember that option b) is correct: Data may evolve, and querying may require adaptation over time.
RDF data on DBpedia is not static and can change as new information is added or existing information is updated. As a result, querying the data may require modifications to adapt to these changes.
For example, if a new entity or property is added to the DBpedia dataset, you may need to update your SPARQL queries to incorporate these additions.