How do I disallow a user to move further unless he selects the correct answer?

I'm trying to setup a multiple choice field that has 4 options. The user has to select the correct option only. Can I set the field so if they don't select correct answer it wont allow them to continue. field will be mandatory

Yes, that is possible using the Show/Hide conditions.

Guide: https://www.jotform.com/help/316-How-to-Show-or-Hide-Fields-Base-on-User-s-Answer

Please check this Demo Form:

https://form.jotform.com/200203433257038

If the wrong answer is selected then a text message is shown and the submit button is also hidden.

Hope this helps!

Thanks.

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User's Reply:

In demo video it displays a message. Please select correct answer if incorrect option selected. I can see how to hide submit button if incorrect but how can I incorporate the above message or other types of message in conditional formatting.

Answer:

You can add a text element to show an error message:

Thanks.