Single-platform software is designed to run specifically on what?

Single-platform software is specifically designed to operate on a particular operating system. This entails that the software is built with the features, functions, and interfaces of that operating system in mind, ensuring optimal performance and compatibility. For instance, an application developed solely for Windows will not function natively on macOS or Linux without some form of emulation or compatibility layer.

By focusing on a single platform, developers can fine-tune the software to leverage the specific capabilities of that operating system, such as file management, user interface elements, and system resources, ultimately providing a more seamless user experience. This approach can also simplify the development process since the developer does not need to account for the variances and complexities introduced by different operating systems.

In contrast, the other options suggest broader applicability—whether it's to work across various operational systems, multiple devices, or both mobile and desktop environments—which is not the case for single-platform software. Such software has its limitations intentionally set to ensure peak efficiency and reliability on just one operating system.