Final answer:
The correct answer is option D. Shelf file, which is a stationary filing system where records are stored horizontally with labels on the side for easy identification and retrieval.
Step-by-step explanation:
The type of stationary file storage that allows records to be stored horizontally with labels on the side is the option D. Shelf file. Shelf filing systems involve placing documents, records, or files on shelves in an orderly fashion where they are easy to locate. The labels on the side of the files facilitate quick identification and retrieval without needing to remove the file from its location, as opposed to traditional drawer filing where files are stored vertically and sometimes require removal for proper viewing of the labels.
This system is efficient in offices and other environments where large volumes of documents need to be organized and accessed frequently. The horizontal orientation and side labeling enhance accessibility and streamline the retrieval process, contributing to overall organizational efficiency.