When don clicks on his reviewing toolbar and then clicks on open double quoteink commentclose double quote on his tablet? computer, which task is he? attempting?

Don is either adding a comment to his MS word document using Track changes or viewing or deleting comments. You can use the track changes feature on the review tab of your word document if you want to see who has been making changes to your document. You can also add, view, or delete comments in the review tab.