Answer: A
Correct answer: Slide Sorter
Slide Sorter displays every slide as a small thumbnail in a grid, which makes it the view for working on the presentation as a whole rather than on one slide. Slides can be reordered by dragging, deleted, duplicated, hidden and grouped into sections from here, and transition timings are shown beneath each thumbnail - so it is also where the flow and pacing of a deck are judged. The other views serve different purposes. Normal is the editing view, with the slide in the main pane and a thumbnail strip beside it. Reading View plays the presentation in a window rather than full screen. Notes Page shows a slide with its speaker notes below, laid out as it would print. Two further views sit on the View tab: Outline View, which shows the text of every slide as an indented outline and is the fastest way to draft content, and the Slide Master, which governs the design of the whole deck.