The Canvas Community
https://community.canvaslms.com/docs/DOC-10561-4212190706
You can easily reply to any discussion. However, the reply option may vary depending upon how your instructor set up the discussion. Discussion replies can be edited or deleted, as long as your instructor has not restricted this setting in your course.
Before submitting a reply for a graded discussion, you may want to review all discussion information, such as the graded discussion rubric, if any.
Note: The discussion reply Rich Content Editor includes a word count display below the bottom right corner of the text box.
Reply to Discussion
To reply to the main discussion, type your reply in the Reply field.
Post a Message
Write your response in the Rich Content Editor [1]. You can add links, photos, equations, and/or media. If your instructor allows, you can also attach files [2]. Once you finish, click the Post Reply button [3].
View Your Reply
Your reply will be posted at the bottom of the discussion reply thread. The border of your post will flash indicating it has been newly posted. The unread icon next to your post will immediately change to the read icon if Canvas automatically marks your posts as read. However, if you manually mark your posts as read, the unread icon will remain until you manually mark it as read.
Reply to a Comment
You can reply to a comment already posted by another student by clicking in the reply field below the post.
Note: Depending on how your instructor set up the discussion, the reply field may look slightly different.
Post a Message
Write your response in the Rich Content Editor [1]. You can add links, photos, equations, and/or media. If your instructor allows, you can also attach files [2]. Once you finish, click the Post Reply button [3].
View Your Reply
Your reply will be posted at the bottom of the discussion reply thread. The border of your post will flash indicating it has been newly posted. The unread icon next to your post will immediately change to the read icon if Canvas automatically marks your posts as read. However, if you manually mark your posts as read, the unread icon will remain until you manually mark it as read.