A new employee at Universal Containers just sent the business analyst (BA) a Slack message...

 This answer states that using standard naming conventions is the best practice that the BA should train the employee on for sending a document named UserStories_v37_final_final_final.docx. A standard naming convention is a set of rules or guidelines that define how to name or label a document or a file in a consistent and meaningful way. A standard naming convention typically includes elements such as project name, document type, version number, date, author, etc. Using standard naming conventions is the best practice that the BA should train the employee on for sending a document because it helps the BA to organize and manage documents or files more efficiently and effectively, and to avoid confusion or duplication among them. References: https://trailhead.salesforce.com/en/content/learn/modules/salesforce-business-analyst-quick-look/use-stakeholder-engagement-skills