Tableau Exam Desktop-Specialist Topic 8 Question 20 Discussion

According to the official Tableau documentation:

Tableau packaged workbooks have the .twbx file extension. A packaged workbook is a single zip file that contains a workbook along with any supporting local file data and background images. This format is the best way to package your work for sharing with others who don't have access to the original data. For more information, see Packaged Workbooks.

https://help.tableau.com/current/pro/desktop/en-us/environ_filesandfolders.htm