Which group of menu items is used for performing calculations using Excel's built-in functions?

The correct answer relates to the group of menu items specifically designed for calculations within Excel. The Formulas menu provides access to a variety of built-in functions that facilitate mathematical, statistical, and logical operations. This category includes essential functions like SUM, AVERAGE, VLOOKUP, and many more, enabling users to perform complex calculations efficiently.

The presence of structured categories within the Formulas menu allows users to find and insert these functions quickly. This aspect of the user interface is crucial for those looking to enhance their spreadsheet capabilities through automated calculations.

In contrast, the Data menu is more focused on data manipulation and organization tasks, such as sorting and filtering, rather than calculations directly. The Review menu contains tools for commenting, tracking changes, and spell-checking, which are not concerned with calculations. The Zoom option pertains to adjusting the view size of the spreadsheet interface rather than performing mathematical operations. Thus, the Formulas menu is the clear choice for anyone looking to utilize Excel's capabilities in calculations.