A pharmaceutical company's regulatory-QA assistant splits submission documents into fixed 400-token windows. Reviewers report that answers about dosing often cite a table's numbers without the column headers or units, and sometimes combine rows from adjacent tables. What is the most appropriate change?

Answer: D — Chunk by structure, keeping each table whole with caption and headers, and add the section path to each chunk

The splitting ignores the document's structure, separating table data from the headers that give it meaning. Structural chunking that keeps tables intact, with captions and heading paths, fixes the cause. (a) patches boundaries but still cuts tables arbitrarily. (b) pushes an ingestion defect onto users. (c) adds noise and cost and still can't guarantee related rows and headers arrive together.