Final answer:
The New Comment button allows you to insert questions and notes into a document.
Step-by-step explanation:
The New Comment button will allow you to insert questions and notes into text in a document. To add a comment, you would need to highlight the word, sentence, or phrase to which you want to add a comment, and then click on the New Comment button located in the tools ribbon. This will create a comment box in the margin where you can type your comment.