Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to deliver effective powerpoint presentations [title] Use large fonts throughout your presentation. [step] It is ok even if you include only two three major points on each slide-but make sure the points are clearly visible to your audience. On the right you can see an example of a slide with large fonts.

Ending1: For example, a slide that shows audio footage includes a round object that is your name or a painted picture in the upper left corner. You can skip this step, but if you used the right size font, you should have enlarged your slides. Ending2: [substeps] By using smaller fonts, your audience will see more powerpoints, which can be useful after you finish outlining your powerpoint presentation. [title] Think of how to make your presentation smoother. Ending3: [title] Try to add as many pictures and animations to your slides as possible. [step] You can even add pictures when they are not very much required! This is because pictures and animations make the slides interesting-and they make your audience want to look at the slides. Ending4: That's because on the left side you can see the themes, keywords, sound effects, and typography. [title] On all slides, make sure that each keyword stands out immediately.

Answer format: ending1/ending2/ending3/ending4