I see that you're a student using Canvas. Below are guides and a video that will help you with how to post to a discussion board.
Discussions: Students (Written Guides)
Discussions Overview (Students) (Video Tutorial)
Hi, and welcome to the Canvas Community Gail Vyeda.
I'm not too sure if you are a student or a teacher so I will share guides for both. I hope you find them helpful.
How do I reply to a discussion as an instructor?
How do I create a discussion as an instructor?
How do I edit a discussion in a course?
How do I reply to a discussion as a student?
How do I attach a file to a discussion reply as a student?
How do I embed an image in a discussion reply as a student?
Here's a link to the Guides Index if you need more help.
Sing out if you need a hand.
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