Which operating system utilizes the Bourne-Again shell (bash) scripting tool?

The Bourne-Again shell, commonly referred to as bash, is a command processor that typically runs in a text window where the user can type commands to perform specific tasks. It is primarily associated with Unix-like operating systems.

Linux is a well-known operating system that heavily utilizes bash as its default shell for many of its distributions. Bash provides powerful features, including command execution, file manipulation, and process control, making it an integral part of the user experience on Linux systems.

While macOS also supports bash and is built on a Unix-based foundation, it is not as directly tied to the core identity of the operating system as it is with Linux, where bash is often the primary shell employed by users and system scripts. Solaris, another Unix-like operating system, can also use bash; however, its primary shells may not be as commonly recognized in everyday use compared to Linux environments where bash is ubiquitous.

In summary, bash is most closely and commonly associated with the Linux operating system, making it the correct choice.