Hi Chatterjee,
We appreciate that you posted back and confirmed the scenario with us.
We have read your description carefully, and it seems that you want to find a option for end users to clear form in Microsoft Forms, and if they type the wrong answers they can click this button to clear all answers they typed.
If my understanding is right, we’re afraid that there is no out of box way to achieve your requirement. We have also tested it on our side, and we also cannot find such option to let end users clear the form they typed. And we have also searched a lot and we may not find related article mentioned it.
We’re sorry it doesn’t meet your requirement, we do understand the inconvenience caused and apologize for it.
To address you concern, we’d suggest you go to Microsoft Forms feedback to provide your feedback, this is the best platform to let us hear from you and make our products and services better for you and others.
If the scenario above is not consistent with yours, you can also post back and point that.
Your understanding and patience will be highly appreciated. I hope that you are keeping safe and well!
Best Regards,
Sukie