When filing names, what is the correct order of indexing units?

The correct order of indexing units when filing names is last name, first name, middle name or initial. This sequence is widely accepted in various filing systems, including business and legal settings, as it allows for easy retrieval and organization of documents.

Starting with the last name ensures that individuals can quickly locate a person's record based on their surname, which is typically how people are identified in a database or filing system. Following this, the first name provides a personal identifier that helps differentiate between individuals who may share the same last name. Finally, including the middle name or initial serves to further refine the search results, particularly in cases where individuals share the same first and last names.

This systematic approach to indexing ensures clarity and efficiency, allowing for organized access to information. Other orders presented in the alternatives do not conform to this established method, which could lead to confusion and challenges when searching for files or documents.