Insert
Explanation:
We need to make use of the insert menu. Select the Insert tab, and select the New Slide to create a new slide. The second method is to right-click over the slide in the slide sidebar, and finally, choose the New Slide from the Pop-up menu. Or you can right-click on the document and then choose the slide, new slide. The new slide with the opted layout is being created. Hence, the correct option here is the Insert menu.