The operating system is the most common type of ______ software.

The correct answer is: B. System

An operating system is a system software that manages computer hardware and software resources and provides a platform for running application programs. It is the most common type of system software.

Communication software is used to send and receive data between computers. Word processing software is used to create and edit documents.

Here are some examples of operating systems:

• Microsoft Windows
• macOS
• Linux
• Android
• iOS