How can you insert a totals row into a table in Excel?

To insert a totals row into a table in Excel, using the option found under Table Tools -> Design is the correct approach. When you have a table selected, the Table Tools contextual tab appears in the Ribbon. Within the Design tab, you will find the "Totals Row" checkbox which allows you to add a totals row at the bottom of your table. This features several functions that can automatically calculate values such as SUM, AVERAGE, COUNT, and more for each column.

This method is designed specifically for tables, taking advantage of Excel's built-in functionalities to streamline the process and ensure that the totals row is formatted and aligned correctly with the existing data. By using this feature, you ensure that the totals row is dynamically linked to the data in your table, meaning any changes in the table data will automatically reflect in the totals row.

The other options do not lead to the appropriate functionality within Excel for inserting a totals row in a table. They may refer to different commands or features that do not specifically address the action needed here.