Warning prompt in odk form

What is the problem? Please be detailed.

I want to add warning prompt in my question for specific answers. For example if user selects second choice then i want a prompt in same screen saying are you sure you want to selected xyz option ? It should not be a constraint and allow user to move forward? Is it possible or should i show warning note in next question thanks
What ODK tool and version are you using? And on what device and operating system version?

What steps can we take to reproduce the problem?

What you have you tried to fix the problem?

Anything else we should know or have? If you have a test form or screenshots or logs, attach here.

I'm not sure how to do a prompt in the same screen like you request. It is my opinion, that putting note type questions afterwards combined with various relevant values might be a good option (as you mentioned). You could also try using a followup acknowledge type question (described 1, 2). Hope this helps. Let me know if you figure out a method to do what you described on the same screen.