Edit the Popup feedback on an Inline Question Component

I am using inline questions in my module (in Flow). Learners get one chance to answer the question. However, if they hit submit without having selected an answer, they are not able to go back and select an answer. Is there a way to prevent the inline question from submitting when the learner does not select an answer?
 
Thank you

Steps to edit an Accordion Component.

Use the Accordion Component to show information in a tabbed menu, users can open and close tabs to view content within the Component. This lesson covers editing of the Accordion and controlling the display properties of the component to suit your design needs.

What do you do if you’ve submitted your question with a typo or have more information you want to include? Well, you edit it, of course. Follow the steps below to learn how.

Steps to edit a Timer to Show and Element on the Page.

A Timer can be added to a page to time a user, apply timed actions to elements, create a timed quiz and much more!

Steps to edit a Fill In The Blank question.

You can allow for more than one correct response from the learner by using a comma list in the Choices.

For example, setting a Choice as "color,colour" would accept either spelling as a correct response from the learner.

Hi, I was wondering if there was a way to customize the Timeline within Flow. I am trying to add a border colour to the boxes. If there isn't a feature already existing for that. Is it possible to add my own custom CSS to modify its appearance?
 

I am using the Test Question in my course. I allow the all feedback popup options in each questions and also allow from the Publish setting in " Post-Test  "option but when I preview this course at that time the correct/incorrect feedback popup are not appear. 
I tried all ways to show / allow the Correct / Incorrect  feedback popup but not working in the course. 
Please give me the solution for this.
When I Preview for a single question page that time Correct / Incorrect  feedback popup is d...

Steps to edit a Multiple Choice Question.

Use cards to set apart certain information, and assign headers, footers, borders and styles as you see fit. This lesson covers controlling the display properties of the Card component to suit your design needs.

Note: Cards are available in multiple styles with or without a Button. The buttons are easily set up just like any other button in dominKnow | One.

Moving beyond “all or nothing” scoring for more-complex assessment questions