Explanation:

In a slide show view, the objective is to navigate through the presentation. The question asks which action *will not* advance the slides. Option A, the 'Esc key', is universally used to terminate or exit the slide show presentation, returning to the editing view or the previous state. It does not advance to the next slide. Option B, the 'Space bar', is a common and convenient key used to advance to the next slide in a presentation. Option C, the 'Enter key', also serves as a command to proceed to the next slide or animation step within a slide. Option D, a 'Mouse button' click (typically the left-click), is one of the most intuitive ways to advance to the next slide or trigger the next animation. Therefore, the 'Esc key' is the only option among those listed that does not advance the slides but rather stops the slide show.