What conditions must be met when setting up a conceptual index? (Select all that apply)

When setting up a conceptual index, it is essential to ensure that the extracted text meets specific size requirements to optimize performance and relevance. The correct choice, which states that extracted text must be less than 30,000, is crucial because a smaller volume of extracted text typically allows for more efficient processing and indexing. This limit helps in maintaining system performance and storage efficiency, as larger amounts of text can complicate the indexing process and lead to resource strain.

In practical terms, keeping the extracted text under this threshold enhances the engine's ability to deliver quick and relevant search results while minimizing the risk of errors or timeouts during the indexing process. Ensuring that the extracted text is adequately sized to fit within operational limits allows for a smoother indexing experience and more effective retrieval of information, thus facilitating better management of resources in a project environment.

The other options either suggest sizes that are too restrictive or unclear in intent, which do not align with the optimal conditions needed for setting up a conceptual index.