The next button and the review section shows the a. next available comment b. next slide with no comment c. previous comment d. edit comment

The answer is A: Next available comment

A comment is a note attached to a word on a slide. We use them when we want to review and provide feedback on a presentation. To add a review comment about a text or an object, you should simply select the text or object. On the review tab, click the Comments group and click New Comment option to type your comments. To move around these review comments you’ve created, you can go to the Comments group in the Review tab and click Previous or Next button. The next button will take you to the Next available comment

browsing like internet search? don't look at anything stupid. or set up restrictions on ur device's search engine. and if something suspicious comes up don't be dumb and click on it. i hope that's what ur question meant.