Which of the following is a benefit of using a virtual machine?

Using a virtual machine offers the significant benefit of being able to run multiple operating systems simultaneously without the need to reboot the host machine. This capability is particularly advantageous for developers, testers, and IT professionals who need to work with different environments for various applications or tools without the hassle of restarting their system each time they wish to switch. The virtual machine creates an isolated environment that allows different operating systems to coexist and function independently, enabling users to test software, run legacy applications, or develop cross-platform solutions efficiently.

This feature enhances productivity and flexibility, as it allows for easier management of resources and the ability to quickly switch contexts, something that would be cumbersome if each operating system were installed directly on hardware. It allows for efficient use of physical resources by abstracting them and allocating them as needed to virtual environments.