I need your advice on how to make an open question

Hello Pegah, 

Happy to help!

If you're trying to add open ended survey questions to your course, using Survey Questions is what we recommend. You can access the Survey Questions section by clicking on Slides -> Survey Question as shown here:

You can read more about how to add question slides to a Storyline 360 project by visiting this article. 

Also, I wanted to invite you to our tips and tricks webinars. Once each month at 11am ET, our training team hops on a live call to answer top questions from our customers.

It's super casual (and they're super smart!), so it's a great place to get expert tips and answers to frequently asked questions from our online community. In short, everything you need to create incredible online learning! You can register for the next call here: https://articulate.fyi/3ZiKgu9

And don't worry if you can't make it, because everyone who registers will get a recording sent to them afterwards! There's also a huge list of on-demand past trainings available.

Hope to see you there!