Final answer:
To quickly access commands in PowerPoint, the toolbar should be used. It offers quick access to common tasks and functions for managing presentations.
Step-by-step explanation:
To quickly access commands in the PowerPoint application, you should use the toolbar. The toolbar in PowerPoint contains a set of tools that are designed for quick access to the most common tasks you might need to perform when creating or editing slides. These include formatting options, inserting objects, managing your presentation, and more. Unlike other options such as the slide, slide sorter, or pane, which have specific functions related to the organization and viewing of slides, the toolbar is directly associated with accessing various commands.