The Routing Page is where inputs and outputs, loaded presets for all engines, and meters are managed and displayed, making it the correct answer to the question.
The page that shows routing (inputs and outputs), currently loaded presets for all engines, and meters in a digital audio workstation or similar audio software environment is typically the Routing Page. On this page, users can see the signal flow diagram that outlines how audio is routed from inputs through various processing engines to the outputs. It also often displays real-time meters to reflect audio levels and allows users to manage presets for quick configuration changes.
While the Main Page might provide an overview of tracks and mixing, and the Presets Page may allow selection of presets for individual tracks or instruments, the Settings Page could offer equipment configuration options, it is the Routing Page that neatly encapsulates all these aspects related to routing and signal management.
The correct answer is 3) Routing Page as it aligns with the functionalities described.