The answer is B: Annotating with the pen or highlighter
When you annotate a word or a phrase in PowerPoint, you put emphasis on that word or phrase during a presentation. If something is not clear, you can always jump back to that previous point in your presentation. To annotate a phrase on your slide, right click on your slide and choose pointer options. You can either choose to use a “Pen” or a “Highlighter”
The answer is B (check your privacy settings) because almost all apps and websites have privacy settings that give you some options for who is allowed to see your posts.
Also, the other three answer choices don’t really respond to the question because they are not about who sees your posts, but what your posts are about.
I think it's the first one. Hope this helps