Which element allows users to adjust the viewable options in an Excel worksheet?

The viewable options in an Excel worksheet can be adjusted using the View tab. This tab contains various commands that allow users to change how the data is displayed, such as switching between different worksheet views (Normal, Page Layout, and Page Break Preview). It also includes options for showing or hiding elements like gridlines, headings, and rulers, as well as the ability to freeze panes and manage window views.

This functionality is essential for enhancing user experience, especially when dealing with larger data sets or when specific formatting is required for presentation or printing purposes. The other options listed, while relevant to different aspects of working in Excel, do not specifically focus on the overall view control of the worksheet.