Final answer:
The specific operating system used by the SANHS computer laboratory is not provided, but commonly used systems in educational settings include Microsoft Windows, Linux, and macOS.
Step-by-step explanation:
The operating system used by computers in any specific location, such as the SANHS computer laboratory, could vary depending on the institution's preference, budget, and functionality requirements. Commonly used operating systems in educational institutions include Microsoft Windows, various distributions of Linux, and Apple's macOS. For a precise answer, one must check with the institution's IT department or refer to the systems directly.
In a computer lab, the chosen operating system would typically support educational software, ensure security and be manageable on a network. For example, Microsoft Windows is widely used due to its compatibility with a broad range of software applications, while Linux might be selected for its robustness and cost-effectiveness. macOS, on the other hand, could be chosen for its user-friendly interface in creative environments.