Final answer:
The headings on the Microsoft Office Ribbon such as File, Home, and Insert are called tabs. These tabs organize commands and features into groups for easy access. So the correct answer is option A).
Step-by-step explanation:
The headings that appear on the Ribbon, such as File, Home, and Insert, are called tabs. The Ribbon is part of the Microsoft Office Interface and facilitates quick access to various commands and features that are organized into these tabs.
Each tab on the Ribbon contains groups of related tools and features. The graphical control element commonly found in many software applications—particularly in Microsoft Office suites and other productivity software—is referred to as a ribbon tab.
As a user interface (UI) design, the ribbon itself arranges different features and functions into tabs, each of which represents a category or collection of related capabilities. In order to facilitate user access to various tasks, these tabs usually include many commands, icons, dropdown menus, and options.