You need to modify the Sales Regions hierarchy to meet the reporting requirements. Which SSAS feature should you use?

Calculations define computed values or named sets using MDX expressions and do not affect how hierarchy names or labels are displayed to users.

Translations in SSAS allow you to define locale-specific names for dimensions, hierarchies, levels, and members. When the Sales Regions hierarchy must surface different labels for different regional audiences, a Translation object maps the metadata to the appropriate language or locale at query time without altering cube structure.

Actions define interactive behaviors such as URL navigation or drill-through when a user clicks on a cube cell or member, not metadata localization.

A Perspective creates a filtered subset view of a cube to reduce complexity, but it does not provide language- or region-specific naming for hierarchies.