Quiz choice not selected and submit button dosn't proivde feedback

Any ideas for a troubleshoot on this?

I have a quiz question. If the user does NOT select a choice and still hits the SUBMIT button, instead of help  prompt like "You must make a selection before submitting"--- the help screen are seems to be displaying another slide.  Perhaps it's because the slide is set up to branch to another slide when the SUBMIT button his selected? But I don't know how to fix it. (See below)

Image 1: Feedback shown when select button his used without making a selection.

Image 2: Set up in Storyline for the slide.

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