Final answer:
To index the most relevant words in the name of a department, bureau, office, agency, or board, it is important to remove unnecessary, repetitive, and redundant words.
Step-by-step explanation:
In the given text, the question is asking to index the most relevant words in the name of a department, bureau, office, agency, or board when filing. To make the indexing process more efficient, it is important to remove unnecessary, repetitive, and redundant words from the name. This helps in creating a concise and clear index.