You Have Casually Used Programs Within the Microsoft Office Suite

You have casually used programs within the Microsoft Office suite for several years, but for Office 2012 you decide to take an online tutorial to really master the applications.
-You know that there are many similarities in features among the Office applications. In your tutorial, what do you learn is the collective term for all the ways you interact with software programs like those in the Office suite?

A) look and feel
B) dialog box
C) user interface
D) file structure