Why might a user choose to use a $.$twbx file instead of a $.$tds or $.$twb file in Tableau?

Question $7$ options:

a$)$

To enhance performance, as $.$twbx files are optimized for faster loading compared to $.$tds and $.$twb files.

b$)$

To save space, because $.$twbx files are compressed versions of $.$twb files and do not include any data.

c$)$

To secure sensitive data, as $.$twbx files are encrypted while $.$tds and $.$twb files are not.

d$)$

To use Tableau Desktop's advanced features, which are only available when working with $.$twbx files.

e$)$

To share a workbook with users who do not have access to the original data sources as $.$twbx files include the data within the packaged workbook.