Step 1: Understanding the Question:
This item evaluates fundamental computer vocabulary by requesting the expansion of the acronym "GUI".
Step 2: Detailed Explanation:
In the realm of computing, GUI is the abbreviation for Graphical User Interface.
This interface type enables users to engage with electronic devices via visual elements like icons, windows, and pointers, as opposed to typing text commands in a command-line interface (CLI). Operating systems such as Windows and macOS are prime examples of GUI environments.
Step 3: Final Answer:
The correct choice is (B).