Multi-choice problem: Continue writing the next sentence in this paragraph:

How to duplicate slides in powerpoint
Open your powerpoint presentation if it isn't already open.
To do so, either double-click the presentation file, or open powerpoint and select the file's name from the left side of the window.
Find the slide you wish to duplicate in the sidebar.

Pick your answer from:
(a). The column of slides in the left pane of the powerpoint window displays all slides in your powerpoint presentation. Right-click your slide's icon in the sidebar.;
(b). Once the slide gets highlighted on the preview screen, you can start clicking and dragging the slide to duplicate it. Find the " duplicate slide " menu in the sidebar.;
(c). Click on the slide you wish to duplicate. If the picture you want to duplicate is not in the sidebar in your powerpoint presentation, click on the picture below.;
(d). It's likely you already have it saved so that there will be nothing in it. You won't need to look at any charts or diagrams before you open the presentation file.;
(a).